What do you think of zoology? —- In my opinion, zoology is ______ botany

Have you finished your homework– _________ . Just half of it. How about you

I think it’s going to be a problem.— Yes. I wonder _____ we can work it out.

Students are required to _______ down what the teachers teach in class. Which of the following is wrong?[ ]

Though having lived abroad for years,many Chinese still the traditional customs. [ ]