Câu hỏi:  The farmer had to wear heavy boots in the winter because the fields were so wet and _______.

A. earthy

B. dusty

C. greasy

D. muddy

Câu 1:  Spanish is the ______ language of most Spaniards.

A. mother

B. home

C. native

D. natural

Câu 2:  This young tree could not have been damaged by accident: I believe it was done __________.

A. in fact

B. on purpose

C. by appointment

D. by understanding

Câu 3:  If you don’t mind, I should like to ______ a suggestion.

A. make

B. show

C. reach

D. place

Câu 4: The castle was surrounded by a _______, which nowadays contained only occasional rainwater.

A. hedge

B. fence

C. dyke

D. moat

Câu 5: The peoples of the African interior began to ______ gold in exchange for the goods they needed from abroad.

A. afford

B. offer

C. receive

D. accept

Câu 6: What he described as a ______ detail I thought was the most important part of the plan.

A. common

B. plain

C. mere

D. flat