29. The field research will take Joan and Paul about five months; it will be a long time ______ we meet them again.
| A．after | B．before | C．since | D．when |
1. —May I open the window to let in some fresh air ?
—___________
| A．Come on | B．Take care | C．Go ahead! | D．Hold on! |
—You speak very good French !
—Thanks . I __________ French in Sichuan University for four years.
| A．studied | B．study | C．was studying | D．had studied |
My uncle’s house in the downtown area is much smaller than ours , but it is twice _______ expensive .
| A．as | B．so | C．too | D．very |
She’ll never forget her stay there ________ she found her son who had gone missing two years before.
| A．that | B．which | C．where | D．when |
–Come in, please, Make yourself at home.
-_____.
-I’m glad you like it.
| A．thanks. You have a nice place here. |
| B．oh, this picture is so beautiful. |
| C．thanks. What nice food you’ve prepared! |
| D．ok. Help yourself to some fish. |