Look! The light is still on in our teacher’s office.— Probably she ______ her work yet.

Is this the first time you _____Chengdu ?—-No. But the first time I _____here, the city wasn’t so beautiful.

I kept looking at the man, wondering _______.

Amy got _____ Jeff when they were both 25 years old.

Do you know the answer _____ the hard question?[ ]