14. "You really _____ go to Cairo. You can see the Pyramids and the National Museum."
A. may
B. might
C. can
D. must
17. If we _____ some more money, we could go away this weekend.
A. are having
B. have
C. had
D. would have
It would be appreciate if anybody could tell me the answer and explain why.
14. The only one that makes sense is "must" (if you must go...); the other three indicate permission or potential, but "must" indicates "have to"!
17. The choice is "had" -- sequence of tenses in an "if...then..." type of sentence (even though the word "then" isn't written). As before, the other words do not make sense; they are all some form of present or future, but the correct one is past tense.
14. The correct answer is C. can. "You really can go to Cairo. You can see the Pyramids and the National Museum." In this sentence, the word "can" expresses possibility or ability. It suggests that the person addressed has the option to go to Cairo and see the Pyramids and National Museum.
17. The correct answer is C. had. "If we had some more money, we could go away this weekend." In this sentence, we use the past simple tense to express a hypothetical situation. The verb "had" is used in the conditional clause to indicate an unreal or unlikely situation in the present. It suggests that if the speakers had more money currently, they would be able to go away for the weekend.