6.　　 Ten ______________ (American) have arrived here .

5.　　 He couldn’t get into the house because the door ___________

　(lock).

4.　　 English is spoken as the ______________ (one) language by most people in the U. S. A.

3.　　 English is the most ____________ (wide) spoken in the world.

2.　　 Knives are used for ______________ (cut) .

1.　　 The students don’t know the _______________ (different).

7．　　　　 DDBCA

6．　　　　 was filled with　 get warm　 a pity　 think of　 to keep　 many more　 long before man

5．　　　　 CDCAAACBCB

4．　　　　 was made　 is taught　 was seen　 was built　 are used　 was given