题目内容：

help~
______,you must remain calm.
A.No matter how you may be frightened yourself
B.However frightened you yourself may be
C.No matter you may be frightened
D.How frightened may you be
I ______ in London for many years,but I’ve never regretted my final decision to move back to China.
A.lived B.was living C.have lived D.am living
No harm ______ your health if you dream a little when you are sleeping.
A.is done to B.does to C.does for D.is done for
No sooner ______ to the lab than ______ to do the experiment.
A.has he got… did he set out B.he has got… did he set out
C.had he got… he set out D.he had got… he set out
We have talked about the invention of TV for a long time.What exactly is the ______ of television on children?
A.affect B.afford C.influence D.effort
在这些句子中,括号里的词有一个是错误的,请指出.
The teachers all (agree that) online safety is a problem (that) is (well) worth (paying attention).
(It is said) that if you wait (long enough) at Piccadilly Circus,you’ll meet (every one) you’ve (ever known)!
(For) several decades coffee has been more popular (than) tea,milk,beer,(fruit juices) and softdrinks (among) Canadians.

优质解答

1.B 这里however=no matter how引导状语从句,从句要用正常语序.A错在形容词（frightened）的位置,应该紧跟how2.C but说明这是一句并列句,不考虑非谓语和从句.have done和过去时的区别就在于：完成态表示动作已经完成...