1.It isn't cold enough for there____ a frost tonight,so i can leave his car out quite safely.A.would be B.being C.was D.to be2.The number of registered participants in this year's marathon was half________.A.of last year's B.those of last year's C.of those of last year's D.that of last year's 3.I would have gone to visit him in the hospital had it been at all possible,but I ____fully occupied the whole of last week.A.were B.had been C.have been D.was(
1.It isn't cold enough for there____ a frost tonight,so i can leave his car out quite safely.
A.would be B.being C.was D.to be
2.The number of registered participants in this year's marathon was half________.
A.of last year's B.those of last year's
C.of those of last year's D.that of last year's
3.I would have gone to visit him in the hospital had it been at all possible,but I ____fully occupied the whole of last week.
A.were B.had been C.have been D.was
(此题为何不能选B?)
第三题是选B，为什么不能选D？
1.Bfor 为介词"因为"后用ing 形式.
2.Dthat 代number
3.B虚拟语气时态往后推一.过去时要变为过去完成时
B
D that就是个代词，代指前面的内容The number
B
1. It isn't cold enough for there____ a frost tonight, so i can leave his car out quite safely. A. would be B. being C.was D.to be答案详D. 这个是there be句型的非谓语形式,如果放在“It be + a...
我认为是DDD
1.相当于句型“It`s cold for sb to do sth”
2.number 是单数用“that”指代
3. B代表过去的过去发生的事，这里仅代表过去发生的事。