The world Wide Web is sometimesjokingly called the World because it ________ be very slow.

(2013·宜春五校联考)Someone ________ his car in front of my house and it’s blocking my way

I will buy you a new bike if you get good grades in the final exam.— Is that a _____ I’m sure I’ll get the bike.

下列句子中特殊句式类型与其他三句不同的一项是（ ）

has promised to keep the secret, so he won’ttell anyone even though ______