The doctors are doing everything they can ________ the patient.

[　　]

______ your letter, I would have started off two days ago.

[　　]

It is hard for me to imagine what I would be doing if I ________ in love at the age of seven, with the Melinda Cox Library in my hometown.

[　　]

They insisted on ________ another chance to try.

[　　]

No one enjoys ________ at.

[　　]

You ought to have put the milk in the refrigerator, now ________ sour.

[　　]

The goods ________ when we arrived at the airport.

[　　]

A．were just unloading

B．were just been unloading

C．had just unloaded

D．were just being unloaded

I doubt whether we will ________ out of it.

[　　]

A．have profit

B．have a profit

C．make profit

D．make a profit

--How long ________ at this job?

--Since 1990.

[　　]

A．were you employed

B．will you be employed

C．had you been employed

D．have you been employed

I feel it is your husband who ________ for the spoiled child.

[　　]

A．is to blame

B．is going to blame

C．is to be blamed

D．should blame