It rained heavily in the south, serious flooding in several provinces.
| A．caused | B．having caused | C．causing | D．to cause |
The shoes are of high quality and ________ long.
| A．wore | B．are worn | C．wear | D．will be worn |
--The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job?
--________ my students have a try?
| A．Should | B．Shall | C．Will | D．May |
--How much salt did you put in the soup?
--I’m sorry to say, ________. I forget.
| A．no | B．no one | C．nothing | D．none |
________ the important documents were needed_______.
| A．Where; finding | B．What; found |
| C．When; to find | D．When; to be found |
We are waiting until the weather ________ a little.
| A．takes up | B．picks up | C．turns up | D．makes up |