The key you have just got ____ the front door.
| A．is used to opening | B．is used to be opened |
| C．is used to being opened | D．is used to open |
The growing speed of a plant is influenced by a number of factors, _____ are beyond our control.
| A．most of which | B．most of them |
| C．most of what | D．most of that |
It is usually warm in my hometown in March, but it _____ be rather cold sometimes.
| A．must | B．can | C．should | D．would |
I have reached a point in my life _____ I am supposed to make decisions of my own.
| A．which | B．where | C．how | D．why |
You will be successful in the interview ______ you have confidence.
| A．before | B．once | C．until | D．though |
－I’ve read another book this week.
－Well, maybe _____ is not how much you read but what you read that counts.
| A．this | B．that | C．there | D．it |