Keep up a good state of mind even if you ______ fail plenty of times.

Professor White has received a letter ___ to give a lecture in Peking University.

We hadn’ t met for 20 years, but I recognized her_____________I saw her.[ ]

____________ Jill ______________ on the phone again—Yes. He often _____________ on the phone for an hour.

When will the plane arrive Shanghai— the morning of March 13th .