____ finishing his homework, he went to play basketball.
| A．In | B．Upon | C．At | D．With |
It’s believed ______40% of stars, like the sun, may have planets that orbit them.
| A．as many as | B．as much as | C．many more | D．much more |
A scientific report has found that snow and ice on Africa’s highest mountain Kilimanjaro ______rapidly and could vanish within 20 years.
| A．has been melted | B．will melt |
| C．is melting | D．was being melted |
–Frank failed the driving test again.
--______ He practiced a lot and was quite confident.
| A．What if? | B．How come? | C．So what? | D．Why not? |
______________ that my dearest friend would play a trick on me in front of all my students.
| A．Never I thought | B．Never did I think |
| C．I thought never | D．Never thought I |
More and more Chinese people follow the practice ______ they will travel to various scenic spots to enjoy the scenery in their leisure time.
| A．whether | B．which | C．where | D．that |