If it _________ that day, we would have finished it because we had already got everything ready．

didn’t rain

haven’t rained

hadn’t rained

don’t rain

_________ Carolina couldn’t get the door open．

Try as she might

As she might try

She might as try

Might she as try

You should understand the traffic rule by now．You’ve had it _________ often enough．

explaining

to explain

explain

explained

While watching television, _________．

the doorbell rang

the doorbell rings

we heard the doorbell ring

we heard the doorbell rings

We hadn’t planned to meet．We met _________ chance．

of

in

for

by

No one helped me．I did it all _________ myself．

for

by

from

to

__________ it be fine this Sunday, we would pay a visit to the art exhibition．

Will

Would

Should

Was

If my teachers hadn’t trained me strictly, things __________ going so smoothly now．

can’t been

wouldn’t be

couldn’t have been

aren’t

Without his help, I __________ in such a good house．

won’t live

wouldn’t live

didn’t live

hadn’t lived

The father as well as his three children __________ skating on frozen river every Sunday afternoon in winter．

is going

go

goes

are going