Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Our ………. activity used to depend on buffalos.
A.economy
B.economic
C.economically
D.economical

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The remote is used ………. turning the A/C on and off.
A.for
B.in
C.at
D.to

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Spending more money ………. TVs and cars while your house is in shambles is ill-advised.
A.on
B.in
C.at
D.for

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The abacus is the world’s ………. computer.
A.elder
B.oldest
C.elderest
D.older

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Boys are prohibited from engaging in ………. contact with girls.
A.phycics
B.physically
C.physical
D.physican

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
We’re ………. of doing homework and stop to go to the mall.
A.tiredness
B.tiring
C.tire
D.tired

Tổng các phần tử của tập hợp các số có hai chữ số và là B(11) bằng
A.420.
B.550.
C.390.
D.495.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
That chicken looks ………. an ordinary chicken, but is actually a mutated one.
A.for
B.like
C.as
D.after

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
We need a good family ………. to liven up the party for the kids.
A.entertainer
B.entertain
C.entertained
D.enter

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
We argue that the world is becoming too dependent ………. the smartphone.
A.in
B.at
C.from
D.on