He spent two hours his mother with housework last Sunday．（ ）
A．helpingB．helpedC．to helpD．help
Well，mum，could I hang out with my friends now？
Yes，you __________．（ ）
A．mayB．canC．mustD．could
Don't let homework __________ too much time．Children need to play．（ ）
A．give upB．take upC．look upD．put up
I was caught in the rain．Even __________，I was late again!（ ）
A．betterB．worseC．furtherD．worst
Rio 2016Olympics will __________ 16days from August 5th to August 21st．（ ）
A．lastB．continueC．countD．keep
Mum always tells me"A smile costs __________，but gives much．"（ ）
A．anythingB．somethingC．everythingD．nothing