Câu hỏi: When I arrived the lecture .............. so I didn’t find it easy to follow.

A. started

B. had started

C. had been starting

Câu 1: When they had to go, everybody ................. Nina and her mother for the party.

A. said

B. thanked

C. told

Câu 2: While we’re working on the project ourboss ................ on a beach in Greece!

A. will sit 

B. will have sat

C. will be sitting

Câu 3: If the trend continues, the averageincome ............. by 107% by 2020.

A. will increase

B. will have increased

C. will be increasing

Câu 4: The teacher ............... us how to do theexperiment when the fire bell rang.

A. showed 

B. shown

C. was showing

Câu 5: Nina was very............... because she got lots of present

A. interesting

B. lovely

C. happy

Câu 6: She..................some friends to her house for a party.

A. decided

B. agreed

C. invited