| A．are being returned | B．have been returning | C．have been returned | D．have returned |
| A．stand | B．stands | C．is being stand | D．has stood |
| A．had you stopped | B．would you stop | C．did you stop | D．were you stopping |
| A．am liking/ have gone | B．am being liked/ am going |
| C．like/ go | D．have liked/ have been going |
| A．write | B．have been writing | C．are writing | D．have written |
| A．is doing | B．has been doing | C．has done | D．has been done |
| A．has been working; has written | B．is working; writes |
| C．has worked; has been writing | D．works; is writing |
| A．she’ll | B．she is | C．she does | D．she would |
| A．must be combining | B．must combine | C．must have been combined | D．must be combined |
| A．was made use | B．was made used | C．was made use of | D．was made used of |
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