I ________ to the zoo yesterday.
A. go B. went C. goes
Yang Liwei ________ about twenty-one hours in space.
A.spend B. spent C.gave
Shenzhou5 _______ into space with Yang Liwei.
A. fly B. flew C. fly to
Why are you wearing a hat?
--it’s hot.
A. So B. Because C. But
Let’s go.
A. swimming B. swims C. swimming