1. dont come 6 oclock. i will be busy A.in B.before C.between D.on 2.it is neccesary that Mike should ask everybody present ...permission to smoke ...ligting a cigarette A.about/ for B.on/after C.to/after D.for/before 3. You need a lot of exprience... do this job A.so that B.for C.in order to D. so as​

1.  B. before

2. D. for/before

3. C.in order to

Объяснение:

1. Don't come before six o'clock. I will be busy.

B. before

2. It is necessary that Mike should ask everybody present for permission to smoke before lighting a cigarette.

D. for/before

3. You need a lot of experience in order to do this job.

C. in order to