Present Tense Verb Worksheet
Fill in the blank with the correct present tense form of the verb given.
1. A: Can I borrow your calculator?
B: Sorry, but I ____still_____ ____use_____ (still/use) it.
2. See you in the morning. I ___am leaving___ (leave) in a minute.
3. I _______never wear____(never/wear) a tie to works and I am refusing___(refuse) to start now!
4. If you drop it, it will explode! What _____do you do__ (you/do)?
5. You are a great cook! This cake __tastes___ (taste) wonderfully.
6. Excuse me, but __this bus stops______ (this bus/stop) outside the Post Office?
7. Henry __still has not found_____(still/not find) a job.
8. I ___am driving___ (drive)! You can sit in the back with Martin.
9. How long _have you been waiting_____(you/wait) for the bus? You _____are looking__(look) really annoyed!
10. Joan ___seldom sit ____(seldom/sit) next to Eve.
11. Stop doing that! You _______are/seem____(be) very silly today, Paul!
12. In winter, what __do you____(you/wear)?
13. Why _____are you looking____(you/look) at me like that? Have I done something wrong?
14. The coat ___does not fit______(not fit) me. I need a larger size.
15. Thanks for this great time. I _____have____ (have) a lovely evening.
16. This is an exam. Why _are you talking_____(you/talk)?
17. I ______have not___ (not decide) yet about buying a new bike. I ____am thinking____(think still) about it.
18. The dog ____has been digging___ (dig) all the morning but it ___has not found___ (not find) anything yet.
19. We _____have been walking___ (walk) the whole day. Let’s have a rest.
20. How many books ______has she edited____ (she/edit) so far?
Answers
Answer:
f(xy)=yf(x)+xf(y) for all real values of x and f(2)=9
given functional equation is f(xy)=yf(x)+xf(y)
dividing both sides with xy gives
⇒
xy
f(xy)
=
x
f(x)
+
y
f(y)
it is similar to cauchy's logarthmic equation f(xy)=f(x)+f(y) where f(x)=clogx
clearly, solution of the given equation is f(x)=c(xlogx) where c is an arbitrary constant
substituting x=2 gives
c=
2log2
9
∴f(x)=
2log2
9xlogx
∴f(4)=18
log2
log4
=18log
2
4=18×2=36
Answer:
17. I ______have not___ (not decide) yet about buying a new bike. I ____am thinking____(think still) about it.
18. The dog ____has been digging___ (dig) all the morning but it ___has not found___ (not find) anything yet.
19. We _____have been walking___ (walk) the whole day. Let’s have a rest.
20. How many books ______has she edited____ (she/edit) so far?