A. a, a B. a, the C. 不填,不填 D. a, 不填
A. on the Sunday B. on a Sunday C. on Sunday D. at a Sunday
A. the, the B. the, a C. the, 不填 D. a, the
A. the, a B. the, 不填 C. a, 不填 D. 不填, the
A. are talking B. talk C. will talk D. talked
A. teaches B. taught C. will teach D. had taught
A. have seen B. was seeing C. saw D. see
A. must B. can C. mustn' t D. can' t
A. looks B. smells C. sounds D. feels
A. not to eat B. to eat C. not eat D. eat
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