I had to wait five minutes on the line _____________ him.

I went to the post office _____________ some stamps.

The students are to submit their final assignments by the end of this month. are to submit in this sentence shows….

You must do your homework before you can go out. The underlined words can be best replaced by________

Although her parents refused, Nina still wanted __________ a surgeon when she grew up.

Mrs. Weaver is a single parent. She has to work hard ____________ a living for herself and her family of five children.