They are those _________ bags.Please put them on the bus.
| A．visitor | B．visitors | C．visitor's | D．visitors' |
My stomach ______ me. I thought it was going away, but now it’s getting worse and worse.
| A．was killing | B．is killing | C．kills | D．killed |
Mike _____come to see me this afternoon. I don’t want to go window-shopping with you in case he comes.
A. can B. must C may D. will
In spite of _____ has recently been done to provide more buses for the people, a shortage of public vehicles remains a serious problem.
| A．that | B．which | C．what | D．who |
A little knowledge is _______, because it can cause people to think they are more expert than they really are.
| A．expensive | B．ordinary | C．precious | D．dangerous |
Don’t worry too much about making _____ mistakes. They are ______natural part of learning.
| A．/; a | B．the; / | C．/; an | D．the; the |