--What’s wrong with you? ---I have a _______.The doctor asked me not to eat anything today because I ate too much yesterday.

We won’t go back home ___ the rain stops. We now have to stay in the classroom.

 Kate and Alice are good friends. ________ often help each other.

---____do you go to the park ?  ---Once a month .

—This watch is too expensive. —Well, we have got some ________ ones. They’re over there.