After the new machine was introduced, the factory produced _____ in 2011 as the year before.
| A．twice as many machines |
| B．twice many as machines |
| C．as twice many machines |
| D．as many machines twice |
We ________ last night, but we went to the concert instead.
| A．must have studied | B．might study | C．should have studied | D．would study |
．---I’m terribly sorry to have put you through so much trouble.
--- ________. I know you didn’t mean to.
| A．Forget it | B．No trouble | C．All right | D．You’re welcome |
A study shows that students living in non-smoking dormitories are less likely to ________ the habit of smoking.
| A．pick up | B．turn up | C．draw up | D．make up |
．--- ______，he knows a lot of things.
| A．The child as he is | B．Child as he is | C．A child as he is | D．Child he as is |
The play had already been on for quite some time when we __ at the New Theatre.
| A．have arrived | B．arrived | C．had arrived | D．arrive |