Can you divide 30 ______6, please?
A、in
B、by
C、with
D、of
第1题：
The Chief Officer estimated the broken space ______ 3 500 cubic feet．
A.at
B.by
C.with
D.in
第2题：
A.in
B. by
C. of
第3题：
A、with ⋯in
B、in⋯by
C、on⋯with
D、by⋯in
第4题：
What are we going to do _______ the thief? Sending him to prison?
A: for
B: by
C: with
D: without
第5题：
Be _____ guard against pickpockets.
A: on
B: by
C: with
D: of
第6题：
1. He saw the whole accident _________ his way home.
A、in
B、by
C、 on
D、 to
第7题：
A. In
B. By
C. At
D. On
第8题：
A.for
B.by
C.with
D.use
第9题：
A、in
B、by
C、to
D、at