---Why do you like summer best? ---______ I can swim in the lake.
A. BecauseB. SoC. And
It is August the _______ today.
A. twentyB. twentythC. twentieth
Can I speak _____ Chen Jie, please ?
A. toB. withC. at
A rabbit is ______ on the grass (草地).
A. runningB. runC. runing
They are _______ the insects carefully.
A. watchB. watchingC. watches
