Câu hỏi: The leopard is _________ the threat of extinction.

A. in

B. on

C. under

D. below

Câu 1: The waste from the chemical factory is extremely .......

A. harm

B. harmful

C. unharmed

D. harmless

Câu 2: The ...... friendly products are designed not to harm the natural environment.

A. environment

B. environmental

C. environmentally

D. environmentalism

Câu 3: Express Money Transfer is one of the quickest ways ……..help us to send money.

A. who

B. whose

C. when

D. that

Câu 4: After she ________ hospital, she had a long holiday.

A. leaves

B. is leaving

C. had left

D. has left

Câu 5: The two children blamed each other ...... the window.

A. to break

B. breaking

C. for breaking

D. having broken

Câu 6: The panda's ...... habitat is the bamboo forest.

A. nature

B. natural

C. naturalized

D. naturally