题目内容：

怎么选.急!The number of cars made each year ( ) three hundred thousand.
A. have grown to B. has grown up C. has grown to D. have grown up

优质解答

选C. has grown to
grow up 是长大,成长的意思
grow to是增长到.
又因为上面的主语是 The number表示..的数量,是单数,所以用has