Please call me _______ 8989766. [ ]

Tom, where is your father?- I’m not sure. He _______ in his office.

I think ______ of the materials I listened to at the beginning of the exam ______ easy. — I think so.

This handbag is Mrs. Li’s now, but it belonged to ______ a week ago.

He plays basketball so well! Who taught _______?—He learnt it by _______.