The first textbooks ______ for teaching English as a foreign language came out in the 16th century.
#90805
A
having written
B
to be written
C
being written
D
written
推荐题目
Saying always has less difficulty than _____.
#98328
A
done
B
doing
C
to do
D
having done
_____ to give up smoking, he threw away his _____ cigarettes.
#95988
A
Determined; remained
B
Determined; remaining
C
Determining; remained
D
Determining; remaining