11. We should inform ______ customers about this scheme.
(a) all
(b) every
(c) each
(d) little
Answer:
(a) all
Explanation:
“All” is used with plural countable nouns like “customers.” “Every” and “each” require a singular noun.
12. Rahul and his friends ______ also invited to the party.
(a) is
(b) was
(c) had
(d) were
Answer:
(d) were
Explanation:
The subject “Rahul and his friends” is plural, which requires the plural past-tense verb “were”.
13. A pair of socks ______ been missing from my closet.
(a) have
(b) has
(c) were
(d) is
Answer:
(b) has
Explanation:
The subject here is the singular noun phrase “a pair,” which takes the singular auxiliary verb “has”.
14. She invited me to dinner. But it ______ two years since I ______ to her house. So I lost my way.
(a) is / went
(b) was / had gone
(c) is / have been
(d) has been / went
Answer:
(d) has been / went
Explanation:
“It has been [time] since [past simple]” is a standard grammatical structure indicating the time elapsed since a past event.
15. They don’t look happy ______
(a) to seeing
(b) to see
(c) in seeing
(d) at seeing
Answer:
(b) to tee [see]
Explanation:
The standard English phrase is “happy to see.” Assuming option (b) contains a typo (“tee” instead of “see”), it is the correct infinitive construction.
