David, _____ I have been sharing a dorm for more than two years, is quite a funny guy.

ke is delicious—-Well, at least it is theone I baked last week

The plane is due to take off at 7:50from the airport.–________ we fail to arrive there intime. –Try to take another flight then.

In order to get good marks, he has changed his attitude ______ study

__________knows anything about him, because he never tells us ___________ about him.