Question

Articles (0) _________ (appear) in newspapers and magazines, sometimes (1)
_________ (offer) tips on learning. According to one write-up, a nose (2) _________
(bury) in a book will not sniff out much knowledge. Hours (3) _________ (spend) on nonstop study are so many hours (4) _________ (waste). Some writers (5) _________
(recommend) that one should take a break and glance at jokes or cartoons. Humour (6)
_________ (help) in learning. However, the risk involved (7) _________ (be) that you
may scare everyone by sudden loud laughter. Perhaps slow music (8) _________ (keep)
you company is a safer aid.

Answer 1

0. that appear

1. offer

2. buried

3. spent

4. wasted

5. recommend

6. helps

7. is

8. keeping

Answer 2

Answer:

0. appearing

1. offer

2. buried

3. spent

4. wasted

5. recommend

6. helps

7. is

8. keeping

Explanation:

0. Here, the v4 (-ing) is used because the verb 'appearing' refers to the newspapers and magazines.

1. Here, the present form of the verb should be used because the sentence explains a fact.

2. Use of past form of the verb in this sentence refers to that the incident had already happened i.e somebody already mentioned it somewhere.

3 and 4. The past participle verb is used because it refers to nonstop study and time wasted.

5 and 6. Both the sentences describe the fact.

7. The word 'humor'  is singular and takes simple present tense.

8.  The sentence refers to the action in progress.