Question

1. Fill in the blanks using the present perfect tense. One has been done for you.
a. I...
.... (come) to your school to demonstrate a few things
about using computers for your studies. As we
...... (see)
recently, the computer is a very important tool in the modern world. How many
..... (use) computers before? Don't worry if you
(not use) the computer before. I .............
(learn) to use the computer recently,
b. We know that pollution
(become) a threat to our survival,
Before the Industrial Revolution in the 19th century, people lived more in harmony with
their immediate environment. With the spread of industrialization, the problem of
pollution .......... ................. (increase). When the Earth's population was much
smaller, no one believed pollution would ever present a serious problem. With
the increasing population on the planet, it ......
(become) apparent
that there are limits. Pollution is one of the signs that humans ....
(exceed) those limits.
1.................. ... (invite) a few friends to join us for dinner. We..
(keep)
(not)
...... (see) them in a while. 1.....
the menu simple. I .......
.........(be) to the market and I........
(plan) to make some pulao to go
(buy) the meat I will cook. I .......
with it. Will that be all right?
in the present perfect tense.​

Answer 1

Answer:

(a) came

have seen

was using

learnt

(b) have became

is increasing

have became

are exceeding

have invited

we have

kept

went

have planned

buyed

Answer 2

a 1.have come

2.have seen

3.have used

4.have not used

5. have learnt

b.1. has become

2. has increased

3.has become

4.have execuded

c.1. have invited

2.have not

3. seen

4.have kept

5.have been

6. have bought

7. have planned

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