[单选] It is often easier to make plans than to ________ them out．
A . put B . carry C . take D . practice
What we have to take________the courses offered only for this term． are。 is。 have been。 has been。
John________ he could improve his exam results, but he did not have enough time to study． knows how。 knows that。 knew how。 knew that。
It is often easier to make plans than to ________ them out．
