The police still haven’t found the lost child, but they’re doing all they .
| A．can | B．may | C．must | D．should |
I can’t find Mr. Smith .Where did you meet him this morning? It was in the hotel ___ he stayed.
A. that B which C. the one D. where
____ that silver is not widely used as a conductor?
| A．Why is | B．Is it why | C．Why is it | D．Why is that |
It was ___ he said ___ disappointed me.
| A．what; that | B．that; what | C．that; when | D．it; when |
It was ___she was about to go out ___the telephone rang.
| A．when ; that | B．so; that | C．before; then | D．when; before4. |
---Who is making so much noise in the garden? --- ___ the children.
| A．It is | B．They are | C．That is | D．There are |