I hear that you ______ along the Mekong River.Have you got everything ready

I’ll ask the teacher about past tense.I’m very puzzled about it.— That is just _____ most of ourclassmates have doubt.

Ann ________ a certificate at the end of the program to show she has learned computer skills.

下列各句中句式与例句相同的一项是（ ）例：为国者无使为积威之所劫哉

Good friends are like stars.You don’t always see them, you know they are there.