Customers are asked to make sure that they ____ the right change before leaving the shop.
| A．will give | B．have been given | C．have given | D．will be given |
1. Would you please __the paper for me and see if there are any obvious mistakes?
| A．look around | B．look into | C．look up | D．look through |
________ many times , he finally understood it.
| A．Told | B．Telling | C．Having told | D．Having been told |
The teacher together with the students ________ discussing Reading Skills that ________ newly published in America .
| A．are ; were | B．is ; were | C．are ; was | D．is ; was |
—You speak very good French !
—Thanks . I __________ French in Sichuan University for four years.
| A．studied | B．study | C．was studying | D．had studied |
Not until I came home last night ________ to bed .
| A．Mum did go | B．did Mum go | C．went Mum | D．Mum went |