问题

I wonder ________ Mary has kept her figure after all these years.—By working out every day.

A:where
B:how
C:why
D:if

正确答案是：

同类题型

How can I get to the Slender West Lake Park— You can drive the Da Hongqiao Bridge and it’s on your right .

.. The teacher __________ each of the students work out a practical study plan.

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I can’t find my English book. I must ___ it at home this morning.

table earlier,we couldn’t be standing here in a queue