If we________a table earlier,we couldn’t be standing here in a queue.
A.have booked | B.booked |
C.book | D.had booked |
Hardly____into the country____it began to rain.
A.we had got;when | B.we got;than |
C.had we got;when | D.did we get;than |
It is I____singing in the garden.
A.who are | B.who is | C.that am | D.that is |
It was____the old worker came that we____the experiment.
A.until;didn’t begin | B.not until;began |
C.until;began | D.not until;didn’tbegin |
____be careful when crossing the street!
A.Must | B.Should | C.Ought to | D.Do |
___come again.
A.Do | B.Can | C.May | D.Did |