有口无肛门,食物从口进入消化腔,消化后的食物残渣由口排出体外,此种动物是 ( )
I'm going to the park ________. A. this weekendB. on this weekend C. in this weekend
On Sundays, I often ______. A. play the football B. play piano C. play the violin
Alice ______ to school by bus every day.
Look at _______ picture.
I want to find a good book. I'm going to the _______.