What do you think of the book— Oh, excellent. It is worth ________ a second time.

My grandfather loves keeping pets．He said a pet could help a person feel______.A．more nervous

In my opinion, what Fei Junlong and Nie Haisheng ___ good to our country’s international positions.[ ]

It’s raining all day, so he at home.

Both Class 3 and our class won’t be able to finish the work unless they ___ each other.