It was the A/N1H1 epidemic ____ spread almost throughout the country ____ promoted the research and production of the flu vaccine.
The teachers were always trying to ______ the excited students at that time.
I thought she was African, but ______ she’s Spanish.
Her operation was a success, but it took her a long time to ___ from her illness.
She changed so much that I could hardly _____ her when we met again after a separation of 20 years. What’s more, she had just had her hair cut, and she was wearing new glasses.
We had planned to climb the hill this morning, but the heavy rain _____ our plan.