Be/ doctor/ she/ know/ what/ side-effects/ medicine/ have

A.Be a doctor, she knows what side-effects the medicine can have.

B.Being a doctor, she knew what side-effects the medicine could have.

C.Having been a doctor, she had known what side-effects the medicine could have.

D.To be a doctor, she knows what side-effects the medicine might have

Since/ beginning/ course/ I/ never/ be late/ class

A.Since the beginning of the course I had never .been late for class.

B.Since the beginning of the course I never have been late for class.

C.Since the beginning of the course I have never been late for class.

D.Since beginning the course I had never been late for class.

Only when/ general's personal diaries/ publish/ truth/ come out

A.Only when the general's personal diaries were published did the truth come out.

B.Only when the general's personal diaries had been published the truth come out.

C.Only when the general's personal diaries were published had the truth come out.

D.Only when the general's personal diaries were published

the truth came out

I/ strong/ advise/ you/ take part/ volunteer works

A.I am strong advise that you should take part in volunteer works.

B.I strongly advise that you might take part for volunteer works.

C.I strongly advise that you should take part in volunteer works.

D.I am strong in advising you to take part in volunteer works.

Driving on the left is strange and difficult for Americans.

Americans aren't_____________________________

It won't be difficult to get a ticket for the game.

You won't have any____________________

After four years abroad, Mr. Brown returned home as an excellent engineer.

After Mr. Brown______________________________________________

I prefer having dinner at home to going out for dinner.

I'd rather__________________________________

Mastering a second language takes timeand patience.

It_________________________________________

He wished he had invited her to his birthday party.

He regretted____________________________