— Shall we go for a picnic tomorrow?
—Well, it all ________ the weather.
| A．belongs to | B．happens to |
| C．depends on | D．concentrate on |
He ________a trip in China, but now he _________on a journey.
| A．used to take; is used to go | B．used to take; is used to going |
| C．is used to taking; used to go | D．is used to take; used to going |
I would like to join the school volunteer project, and I often imagine _______.
| A．what I should do it | B．what should I do |
| C．what I should do | D．how should I do |
He _______ you an e-mail as soon as he ________ a plan.
| A．sends; comes up with | B．sends; will come up with |
| C．will send; will come up with | D．will send; comes up with |
Aron ______ water five days later.
| A．ran out | B．used out | C．ran out of | D．used out of |
This is______ difficult problem that few students can work it out.
| A．so | B．so a | C．such | D．such a |