It is important that we wild animals.
| A. will protect |
B. should protect |
C. shall protect |
D. are protecting |
Many friends sent me e-mail to ________ me on the birth of my son.
| A．celebrate | B．reward | C．express | D．congratulate |
Many people ________ the accident, so it was not difficult to investigate（调查）.
| A．witnessed | B．yelled | C．annoyed | D．envied |
It was along the Mississippi River _________ Mark Twain spent much of his childhood.
| A．how | B．which | C．that | D．where |
In 1938, Hitler _________ war against Poland, which started the Second World War.
| A．declared | B．stated | C．broadcast | D．advertised |
A serious earthquake struck the village, __________ many people homeless.
| A．to cause | B．caused | C．causing | D．cause |