The growing speed of a plant is influenced by a number of factors, ______ are beyond our control.
| A．most of them | B．most of what | C．most of which | D．most of that |
Don’t have horse ______ too fast, it will get tired soon.
| A．ran | B．to run | C．runs | D．running |
We had to read ______ the light of a candle because the light went out.
| A．by | B．in | C．with | D．on |
Young Lee learned some English when she stayed in America, and last year she ____ herself Japanese.
| A．kept on teaching | B．went on teaching |
| C．kept on to teach | D．went on to teach |
_______ my opinion, you shouldn’t go there by yourself.
| A．On | B．To | C．In | D．At |
______ the beginning of the meeting, we heard a report by Mr Li.
| A．By | B．In | C．At | D．On |