Lesson 10 is ____ most difficult lesson, but it isn’t ____ most difficult lesson in Book One.
A. a, a
B. a, the
C. the, the
D. the, a
查看答案
My sister works in a factory. She goes home once ____ month.
A. a
B. an
C. the
D. every
He was absent because he had caught ____.
A. heavy a cold
B. the heavy cold
C. a heavy cold
D. heavy cold
____ water is ____ liquid.
A. The, a
B. A, a
C. /, /
D. /, a
In winter ____ people often hang up wet clothes near ____ fire.
A. /, /
B. a, a
C. /, a
D. the, a