Câu 30: Cuc Phuong National park was ________opened in 1960.
A. officer B. office C. official D. officially
Câu 31: If modern technology did not exist, we would never have such precious information.
A. confidential B. detailed
C. valuable D. precise
Câu 32: You did not have breakfast. That is why you are hungry now.
A. If you had had breakfast, you wouldn’t be hungry now.
B. If you had had breakfast, you wouldn’t have been hungry now.
C. If you had had breakfast, you wouldn’t hungry now.
D. If you had breakfast, you wouldn’t hungry now.
Câu 33: These birds________ to North Africa in winter.
A. migrate B. settle C. go D. relocate
Câu 34: ________________ he have free time, he’ll play tennis.
A. Should B. Were C. Unless D. Had