I will buy you a new bike if you learn how to swim this summer. —Is that a ________? I’m sure I’ll get the bike.

She can’t help _____ the house because she’s busy making a cake.

Xiao Wang, will it take to fly to Guangzhou?—Sorry,l don’t know.[ ]

Please turn to page and look at the picture in this unit.

The lawyer rarely wears anything other than jeans and T-shirt ________ the reason.