1 . The wonderful moment, ________ we had been expecting for years, finally came.

A．which

B．that

C．what

D．when

2 . The country is now the world’s largest exporter of goods and the second largest importer, ________ has created millions of jobs in export industry and related areas.

A．it

B．what

C．that

D．which

3 . At the end of the program, the students are paid $600—a way this program differs from others, ________ often charge a fee.

A．who

B．that

C．they

D．which

4 . The “face-palm” is one of the 10 hot emojis nowadays used by young people, _______ many are frequently employed in online chats.

A．of whom

B．to whom

C．through which

D．of which

5 . Mr Mike, to________ laboratory we paid a visit last week, will give us a report on how to choose career this evening.

A．who

B．which

C．whose

D．whom