He left home on 1970 and____heard of since.
A. hadn't been
B. wasn't
C. not has been.
D. has not been
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They____than be called.
A. have no sooner returned
B. have hardly returned
C. had no sooner returned
D. had hardly returned
Henry would rather that his girlfriend____at the same department as he does.
A. works
B. had worked
C. worked
D. has been worked
人体可分为哪几个组成部分?
A. 头部
B. 颈部
C. 躯干
D. 四肢
四大基本组织包含()
A. 上皮组织
B. 结缔组织
C. 肌组织
D. 内脏组织