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 |
.
Most animals and plants are sensitive _______ sudden changes in temperature.
| A．for | B．with | C．to | D．in |
.
Water, _______ seems so simple and common, is what makes life possible.
| A．that | B．as | C．what | D．which |
.
You _______ not drive so fast. There is plenty of time.
| A．need | B．could | C．may | D．can |
.
I will never forget how happy I was when I _______ China again.
A. set feet in B. set foot in C. put foot in D put feet in
.
_______ great achievements the future may have in store for China, it’s likely that many of them will be born in northwestern Beijing.
| A．However | B．Whatever | C．No matter what | D．No matter |