What an accident! If the driver_________ carefully, things would not be as they are.
| A．has driven | B．drove | C．had driven | D．was driving |
The price_________recently. I wonder whether it will remain so.
| A．was going up | B．went up | C．has gone up | D．has been going up |
What I said and did at your house last night_________just between you and me.
| A．is | B．are | C．have been | D．had been |
30. The subway __________in our city, and I’m sure there will be fewer traffic jams in the future.
| A．is building | B．is built | C．is being built | D．will build |
Some teenagers _______ their health because they often expose themselves to so many electric products.
| A．have damaged | B．are damaging | C．damaged | D．will damage |
The task _____ more difficult than we expect.
| A．proved to | B．proved us | C．was proved | D．proved |
Scientists ______ SARS for several months before a major discovery was made in the field.
| A．had been studying | B．have been studying |
| C．have studied | D．are studying |
Before the coming YSL auction, the Christie’s Auction(拍卖) Company had advertised all of the articles ______ including the Chinese heads of Rabbit and Rat.
| A．having sold | B．to be sold | C．selling | D．sells |
The new Hukou(户口) policy, according to some experts, ______ to attract more high-end talents to contribute to Shanghai’s development.
| A．serves | B．serving | C．to serve | D．is served |
He told us he _____ a concert _____ .
| A．had attended ... three days before | B．attended ... three days ago |
| C．would attend ... since three days | D．was attending ... for three days |