When we got there, he was about to leave So he only had time to explain _____ to us how he _____ our plan [ ]

Is Jeff young ________ old — ________.

The boy is too stubborn,who is able to______him to follow my advice?

My sister goes to the concert ________ car everySunday.

How’s your tour around the North Lake? Is it beautiful? —It ________ be, but it is now heavily polluted.