You must drive _____ by sled.
A. slowly B. slow C. run
Do you often play football _____ here?
A. on B. at C. /
What do you do ______ the weekend?
A. on B. in C. at
I _____ helpful, he ______ helpful, too.
A. is, am B. am, is C. am, are
They ______ lots of places last Friday.
A.visits B.visit C.visited
Lingling is good at ______.
A.sing B.singing C.sings