He made another wonderful discovery, _____ of great importance to science．
| A．which I think is | B．which I think it is | C．which I think it | D．I think which is |
It’s obvious that his ______ to the problem is wrong, so we’d better try another way to solve it.
| A．way | B．means | C．approach | D．intention |
Peter phoned to say they had arrived safely, so put your mind ______.
| A．with ease | B．by heart | C．in peace | D．at ease |
. There are many mistakes in his essay, ______his failure.
| A．which results | B．leading to | C．led to | D．that led to |
. He regretted______ to the lecture the day before.
| A．not going | B．not to go | C．not have gone | D．to not going |
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