______ I saw Jane，she was picking cotton in the field.
| A．For the first time |
| B．At the first time |
| C．By the first time |
| D．The first time |
The professor managed to find some grounds (facts)_________his arguments．
| A．to be based on | B．to base on |
| C．which to base on | D．on which are based |
I would like a job which pays more，but _______I enjoy the work I’m doing at the moment．
| A．in other words | B．on the other hand | C．for one thing | D．as a matter of fact |
----- Have you ______ some new ideas?
------ Yeah．I’ll tell you later.
| A．come about | B．come into | C．come up with | D．come out with |
Leave your key with a neighbor ______you lock yourself out one day．
| A．ever since | B．even if | C．soon after | D．in case |
A new_____ bus service to Tianjin Airport started to operate two months ago．
| A．normal | B．usual | C．regular | D．common |