Where was it ________ you have your shoulder injured?

when

that

/

how

Thinking of what she has suffered from the failure of her marriage, she can’t help ________．

sigh

sighing

to sigh

but sigh

He paid for a seat, when he ________ have entered free．

could

would

must

need

Before he came to London, he had never heard a single English word ________．

speaking

speak

spoken

to speak

When I entered the theatre, I saw him ________ in the first row．

sit down

sat

seated

seating

The water in this glass is too hot．I prefer some cold ________ water．

to boil

having boiled

boiled

boiling

Helen ________ go on the trip with us, but she isn’t quite sure yet．

shall

must

may

can

This cake is very sweet．You ________ a lot of sugar in it．

should

could have put

might put

must have put

He could never resist ________, and ended up ________．

to drive fast; to die

to drive fast; dead

driving fast; dead

driving fast; died

Please come to my place ________．

whenever you have convenience

it is convenient to you

you are convenient

whenever it is to your convenience