You could understand what he is referring to if you _________ his lecture yesterday．

attended

had attended

have attended

would have attended

_________ full preparation, the doctor decided to postpone the operation．

Not making

Not made

Not to make

Not having made

This is the first time you has visited our city, _________?

hasn't you

didn't you

hasn't it

isn't it

Not until he found nobody was in the school _________ it was Sunday．

David realized

David didn't realize

did David realize

didn't David realize

What made the public unsatisfied is not what the minister said about the train crash but _________ he said it．

the way

in the way

the way which

in the way that

People feel shocked that a university student _________ do that to a woman．

must

may

can

should

With spring _________, many cold-blooded animals are coming out to hunt food．

approached

approaching

to be approached

having approached

Come to see me whenever _________．

you are convenient

you will be convenient

it is convenient to you

it will be convenient to you

When the boy was seeing the _________ film, he was very _________．

bored; disappointing

boring; disappointed

bored; disappointed

boring; disappointing

I recommended that we _________ more exercise in our spare time．

do

did

must do

would do