—Jim isn’t in the classroom. Where is he?
—He _______to the teacher’s office.

—Don’t worry. My mother will look after your baby ______.
—Thanks a lot.

He promised to pick me up at the school gate. However, he ______ yet.

I have two cats. One is black, and ______ is white.

—Junk food is bad for our health.
—Yes, the ______ you eat, the healthier you will be.

There _________ a concert on Qixing Square next Monday evening.

—Who helped Jessie with her English?
—_______, she taught herself.

The population of the world ______ still _____ now.

Which country is ______, Japan, Korea or America?

There will be a stamp show in the museum _______ we visited last week.