QQ,______you can chat with your friends, makes communication easy.
It’s obvious that his ______ to the problem is wrong, so we’d better try another way to solve it.
Peter phoned to say they had arrived safely, so put your mind ______.
. There are many mistakes in his essay, ______his failure.
. He regretted______ to the lecture the day before.
After a two-hour talk, she______ the truth of the report. A. was persuaded B. was believed in C. was convinced of D was advised