Maybe if I science, and not literature then, l would be able to give you more help. (2011 .北京 )
Only when________ possible to settle the problem.
They are still very cautious about ______ side effect the new medicine will bring about, although the experts have tried it on about 2,000 patients.
In the job interviews, job applicants often find themselves ________ unexpected questions, some very difficult to answer.
----Why is he feeling down today? ----Because the suggestion he _______ has been turned down.
________ cleaning the yard and making up the beds for the old, we also read newspapers for them and had chats with them.