Q:
First, notic if there is enough light.
Second, keep a good posture.
Third, Take a __A__ rest every hour.
Fourth, have you eyes __B__ by the eye doctor erery year.
Which is ture in the box A?
(A) ten minute
(B) ten-minute
(C) ten minutes
(D) ten-minutes
I chose C but why answer is B?
Which is ture in the box B?
(A) examined
(B) was examined
(C) be examined
(D) examine
I chose A but why answer is D?
Please help me !!!!