A：a great many of
B：a great deal of
C：a large number of
D：a large amount of
huī ____ ____
sēn ____ ____
kuài ____ ____
cóng ____ ____
zhè ____ ____
bào ____ ____
在相同时刻的物高与影长成比例，如果高为1.5米的测竿的影长为2.5米，那么影长为30米的旗杆的高是（ ）
Bob promises to join in the football match ________ he has to help his parents on the farm.
