what
- What’s the matter _______ Sally?[ ]
- What are you doing____ summer vacation?[ ]
- What is a writing brush, do you know? — It’s used ______ writing and drawing. [ ]
- What do the farmers do the machines? [ ]
- What happened to Mike? —He had a stomachache. He began to work _______ having breakfast this morning.[ ]
- What’s wrong _____the bike?[ ]
- What hot weather! The temperature must be ______ 30℃. [ ]
- What do you like ______ China? —The people and food. [ ]
- What were you doing_____nine and eleven yesterday? [ ]
- What’s matter _____ your computer? [ ]