—Must I turn off the gas after cooking?
—Of course. You can never be ____ careful with that.
| A．enough | B．too | C．so | D．very |
Luckily, the bullet narrowly missed the captain _____ an inch.
| A．by | B．at | C．to | D．from |
The ship sailed _____ Xiamen _____ 30 miles an hour.
| A．for, at | B．to, at | C．to, by | D．for, by |
It’s quite warm _____ January.
| A．in | B．for | C．on | D．at |
The key _____ four modernizations lies _____ the science and education.
| A．to, on | B．of, on | C．to, in | D．of, in |
What one thinks and feels is mainly _____ traditions, habits and education.
| A．because of | B．due to | C．since | D．through |