问题

Earning money by collecting rent from tenants (房客) is easy and happy, but that’s not ________ we study for.

A:what
B:whom
C:why
D:when

正确答案是：

同类题型

wly built café, the walls of_______are painted light green, is really a peaceful place for us, specially afterhard work

Lucy’s new job p

___the fact that his firstexperiments had failed, Prof. Smith persisted in his research.

What ________ you ________ May is a true friend

he wto helpher.my help, she wrote me aletter of thanks.