Câu 1. Since they came, we ______ able to work on the project.
A. are
B. have been
C. have to be
D. were
Câu 2. Sputnik was the first ______ satellite made by the USSR.
A. manned
B. natural
C. artificial
D. live
Câu 3. The Cosmonaut Training Center at Star City, Russia was named ______ him.
A. of
B. on
C. for
D. after
Câu 4. It was ………… of you to envy my success.
A. generous
B. selfish
C. selfless
D. good
Câu 5. The Road Transport Industry is becoming increasingly ………………. about the number of lorry hijackings.
A. interested
B. attentive
C. concerned
D. careful