Many developed countries have agreed to help the less developed ones but it remains ________ whether they will take action or not.

----Can you think of another good idea? ----This is the best approach I can imagine ________ the work ahead of schedule.  

After starting work, Cao spent his evenings _____ in his books and was eventually admitted to a secondary technical school.

The Japanese people keep up cheerful spirits ________ the world that they can get over the crisis caused by the terrible tsunami（海啸）.

Stop_____ this kind of deer. They are_________.