--What’s wrong with you? You look very tired. --I ___________ late to study for the English test last night.
–Do you know what he _______ the day before yesterday? -Yes. He ________.
We’ll climb the mountain _______ the weather is bad this weekend.
–I’m planningthe weekend with my grandparents, Mom. --Oh, don’tto buy them some nice food.
–When did Sam arrive _____ Guangzhou? --the morning of November 16th .
Please ________ when the train will leave.