V. Choose the best answer (选择最恰当的答案): (共26分)
31. Mr. Richard gave some students ______ lecture on international business yesterday.
A) a B) an C) the D) /
32. Many great inventions have become a big part of ______ life today now.
A) we B) us C) our D) ours
33. You can improve your spoken English ______ listening and speaking more.
A) in B) with C) by D) about
31. Mr. Richard gave some students ______ lecture on international business yesterday.
A) a B) an C) the D) /
32. Many great inventions have become a big part of ______ life today now.
A) we B) us C) our D) ours
33. You can improve your spoken English ______ listening and speaking more.
A) in B) with C) by D) about