Did you pass the exam? —Yes, but I can’t pass it _____ the teacher’s help. [ ]

We _________ for a picnic if it _________ rain this Sunday.

The building ______ stone and each stone ______ more than two tons (吨).[ ]

Is this factory ______you visited last week?

Why are you in such a hurry, John?—There _______ an NBA basketball game in ten minutes.