These natural parks are very important for preserving many animals, which would _______ run the risk of becoming extinct.
| A.otherwise | B.therefore | C.nevertheless | D.however | 
The wallet was returned to him without anything _____.
| A.missed | B.to be missed | C.missing | D.to miss | 
I was deep in thought, so I didn't notice _____.
| A.him to come in | B.him come in | C.he come in | D.him coming in | 
Did you hear the sound like that of a door _____?
| A.burst | B.to burst in | C.burst in | D.to be burst in | 
Who could have imagined such a sweet-tempered girl as Jane _____ such a thing!
| A.doing | B.to do | C.will do | D.does | 
They found a _____ old man _____ on the ground when the door was broken open.
| A.dying;lying | B.dying;lied | C.dead;lied | D.dead;lain |