Câu hỏi: Many Vietnamese people ______ their lives for the revolutionary cause of the nation.

A. sacrifice

B. sacrificed

C. sacrificial

D. sacrificially

Câu 1: Alex is busy _______ for his exams.

A. to study

B. studied

C. studying

D. studies

Câu 2: Monkeys can’t sing, ______________?

A. can they

B. can it

C. can’t they

D. can’t it

Câu 3: The more _______ and positive you look, the better you will feel.

A. confide

B. confident

C. confidently

D. confidence

Câu 4: The worker was _______ his boss expected, so he was offered a raise.

A. more hard-working

B. as hard-working than

C. more hard-working than

D. more hard-working as

Câu 5: He was looking at his parents _______, waiting for recommendations.

A. obey

B. obedience

C. obedient

D. obediently

Câu 6: Sometimes I do not feel like _______ to my sibling about my troubles.

A. talk

B. to talk

C. talking

D. talked