I _________ little time to get ready for the test, so I wasn’t confident at that time. 

----Doctors, it seems that you like to work with animals.----Yes, I think animals should ______ as our friends.

---You have found your lost umbrella, haven’t you?----Yes.I        it behind the door this afternoon.

I think students______ to do homework with friends.

The number of people invited ______ fifty, but a number of them ______ absent(缺席) for different reasons.