. A clean environment can help the city bid for the Olympics, ________ in turn will promote its economic development.
| A．what | B．which | C．that | D．as |
.Seeing her mother come back, ______.
| A．tears ran down her cheeks | B．her tears ran out |
| C．she burst into tears | D．she burst into crying |
.-- Have you seen the film?
-- Yes. I ______ it three times when I was in Tokyo.
| A．saw | B．had seen |
| C．have seen | D．was seeing |
.The headmaster made a suggestion that the sports meet until next Sunday．
| A．will be put off | B．will put off |
| C．put off | D．be put off |
.The wet weather will continue tomorrow, when a cold front ______ to arrive.
| A．is expected | B．is expecting |
| C．expects | D．will be expected |
.— This is one of the oldest trees in the world.
—_____ such a big tree.
| A．Never I have seen | B．I haven't never seen |
| C．Never have I seen | D．I have seen never |