试题详情

_______ the math problem is difficult, I’ll try very hard to work it out.

ou find this item too difficult to work out, it is _____ to leave as it is and move to the next one.

Sometimes it is very difficult to _______ some of the English words. Even the native speaker can no

The working conditions in the factory have been greatly _______ . Now it is very comfortable to work

t one to three months worth of learning. The decline is more detrimental for math than it is for r