Science is _____ difficult for some students ____ learn, so many of them don’t like it.
| A．enough, to | B．too, to |
| C．so, to | D．much , to |
Tom ______the USA. He ________back in two months.
A. has gone to; comes B. has gone to; will be
C. has been to; comes D. has been to; will be
I haven’t decided when _____ a holiday yet.
| A．took | B．taking | C．to take | D．take |
We didn’t learn __________in this lesson.
| A．something new | B．new something |
| C．anything new | D．new anything |
Dear students, please read every sentence carefully.
_________you are, ______mistakes you’ll make.
| A．The more carefully; the fewer |
| B．The more careful; the less |
| C．The more carefully; the less |
| D．The more careful; the fewer |
I met a good friend of mine while I _____ on the street.
| A．walks | B．walk | C．was walking | D．an walking |