( C )

A. this

B. that

C. it

D. which

27.You’d better take an umbrella with you _______ it should rain.

( B )

A. in case of

B. in case

C. because

D. when

28._______ you have decided to get married, you should shoulder the

family responsibilities.

( B )

A. Although

B. Once

C. Or

D. Unless

29.It _______ that I met one of my old classmates on my way home yesterday.

( D )

A. took place

B. occurred

C. broke out

D. happened

30.The old woman next door is very keen _______ growing roses.

( C )