When he returned home, I found the door ______ .

A. unlocking

B. unlocked 

C. to be unlocked

D. have unlocked 

Mr Pike______ English at our school for 20 years before he retired last year.

A. was teaching 

B. has been teaching 

C. is teaching 

D. had been teaching

It was found that he lacked the ____ to pursue a difficult task to the very end

A. obligation 

B. engagement 

C. commitment 

D. persuasion

Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.

The government has passed laws to protect wildlife from commercial trade

A. enforced

B. enabled   

C. ensured   

D. enacted  

Để đánh số trang của một cuốn sách, người ta viết dãy số tự nhiên bắt đầu từ 1 và phải dùng tất cả 1998 chữ số.

a) Hỏi cuốn sách có bao nhiêu trang?

b) Chữ số thứ 1010 là chữ số nào?