-----Is this the first time you _____Chengdu ?
-----No. But the first time I _____here, the city wasn’t so beautiful.
| A.visited, came | B.visited, have come |
| C.have visited, have come | D.have visited, came |
—Tom lost his job last week.
—___he is wandering in the street these days.
| A.No doubt | B.No way | C.No wonder | D.No problem |
The witnesses(证人) of the accident said that the lorry _______ very fast at the crossroads when the accident happened.
| A.is traveling | B.had travelled |
| C.was to travel | D.was travelling |
._____ nothing is doing ill.
| A.Do | B.To do | C.Doing | D.Does |
Our monitor talks about Mars as if he ______ a scientist.
| A.is | B.were | C.be | D.had been |
Your floor is dirty. It needs _______.
| A.clean | B.to clean | C.cleaning | D.cleaned |