With all the family members ______ on vacation without him, the boy felt extremely lonely and afraid.
| A．to have gone | B．going | C．had gone | D．gone |
—— It will be three months ____ we meet again.
—— Then we can keep in touch by email.
| A．since | B．as | C．before | D．after |
—— Lucy! See what your uncle has bought for you.
—— Oh, what a nice skirt! I ___ he ___ to bring me a gift.
| A．never think; is going | B．never thought; was going |
| C．don’t think; is going | D．shouldn’t think; was going |
Apart from the urgent problems _____________by wars and conflicts, the UN helps countries with other problems such as lack of education ,lack of food , poverty ,disasters and disease.
| A．to cause | B．having been caused | C．caused | D．having caused |
Now let me tell you the work I have been doing with them. My job with the UN is not paid, but voluntary and as I said _______, I mainly visit countries where the UN has programs to help people.
| A．before | B．although | C．even | D．in case |
If you had joined the chat room ten minutes ago, you _____________what we were talking about.
| A．would know | B．would have known | C．knew | D．had known |