After that he continued to    (专心于) himself to research work.

Not having seen him for a long time, I can hardly r him.

Nothing could  (代替) the family he had lost. （根据中文提示填空）

I think you should (道歉) to her for losing your temper.（根据汉语意思单词拼写）

When nutrients are in short supply the body cannot f properly.

An active volcano may eat any time.

The library may (sponsor) a language group you could join.

Could you s the strengths of your proposal for us?

The air was so cold we could hardly b.

Which one do you (较喜欢), the blue jacket or the red one?

Hold your breath for a count of five, and then slowly (呼吸) out.