1. Lin Li is crying. ______ pet do g is missing.
A. She B. Her C. Hers D. He
2. Tom is making a model plane _____ six.
A. in B. on C. at D. for
3. My friend often ____ TV in the evening .
A. watch B. watches C. is watching D. looks at
4. ________are the students doing? They're writing.
A. What B. How C. Where D. Who
