1. Let’s take ______ photo! Everyone, cheese!
A. a B. an C. the D. 不填
2. --- ____ do you study for tests?
---I study math by ____ lots of exercises.
A. How, doing B. How, do C. When, do D. What, doing
3. He is only _______ boy. He isn’t old enough to take care of himself.
A. a 8-year-old B. an 8-year-old C. a 8-years-old D. an 8-years-old
4. I remember Susan left _______ a very cold morning of January.
A. in B. on C. at D. from
