—What’re the rules in class? —First, mobile phones can’t be ______.
--Let’s go to the zoo this weekend. ---_________. But I have to finish my homework first.
If you want to be healthier,you should eat ______ meat and______ vegetables .
Can you __________?
There are five _______ on the floor.
---______ are you buying so much food? ---Because your uncle is coming for supper.