1, As we know it, Earth is the only planet that accommodates life. It is .............

A. inhabitable

B. habitual

C. habitat

D. habitable

2, By the time Laika became the first astronaut dog, fruit flies ..................... launched into space.

A. had been already

B. had already been

C. has already been

D. was already

3, What would you do if you ......................... a UFO ?

A. saw

B. would see

C. had seen

D. see

4, His house looks very large and beautiful. It is ................... house.

A. a seven-room

B. a seven-rooms

C. seven rooms

D. seven room

5, Hoai cannot remember the name of the restaurant .................... she ate her favorite roasted duck.

A. where

B. whose

C. whom

D. which

1.C

2.B

3.D

4.A

5.A