单项选择题
A．where to live B．which to live C．to live in D．to be lived
Criticism and self-criticism is necessary（）it helps us ...
单项选择题Criticism and self-criticism is necessary（）it helps us to find and correct our mistakes.
A．for that B．at that C．with that D．in that
A man escaped from the prison last night. It was a long...
单项选择题A man escaped from the prison last night. It was a long time（）the guards discovered what had happened.
A．before B．until C．since D．when
（）he finishes his task, the team leader doesn't mind（）a...
单项选择题（）he finishes his task, the team leader doesn't mind（）at the work site.
A．So long as ... what time he arrives B．So far as ... when he arrives C．As long as ... however late does he arrive D．Provided ... no matter how long does he arrive
