dark (反义词) _______

dark（反义词）________.

________ a dark night, when the lightening flashes, what do you see?

1. A.
   On
2. B.
   In
3. C.
   At
4. D.
   /

After dark they put the lights ______ into the river and watch them ______ away.

1. A.
   careful; sail
2. B.
   carefully; to sail
3. C.
   careful; to sail
4. D.
   carefully; sail