We_______on this project for four hours. Let’s have a rest.
I promised to get there before 5 o’clock, but now the rain is pouring down. They ________ for me impatiently.
It was playing computer games that cost the boy plenty of time that he ________ have spent doing his lessons.
—________ I return the dictionary within three days? —No, you ________. You ________ keep it for five days.
Sir, you ________ be sitting in this waiting room. It is for women and children only.
The train has gone. You two ________ on time.