Welcome to our online mall! If you buy ______iphone4 here, you can get a watch for _____free.
—Has Mary finished writing her article? —No, it ________ before class was over.
You ought to tell him the truth,________?
The plant is dead. I ________ it more water.
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.