Câu hỏi: Advanced students need to be aware of the important of collocation.

A. of high level

B. of great important

C. of low level

D. of steady progress

Câu 1: At times, this can be risky, and the keepers have been injured and one has been killed.

A. good

B. useful

C. healthy

D. secure

Câu 2: I love it when someone's laughter is funnier than the joke.

A. cry

B. shout

C. smile

D. frown

Câu 3: We can do something to save the earth.

A. kick

B. shoot

C. throw

D. destroy

Câu 4: As long as you are still alive, you will definitely encounter the good things in life.

A. well

B. surviving

C. sick

D. dead

Câu 5: It is easy to open a shop but hard to keep it always open.

A. welcome

B. appear

C. switch

D. close

Câu 6: Use water sparingly and keep water clean.

A. dusty

B. dirty

C. wicked

D. halfway