Barack Hussein Obama, the present president of the USA, ________ a naughty (调皮的) boy at school.
A. was used to be B. was used to being
C. used to be D. used to being
The boy is often made pictures for hours by his mother.
A. to draw B. to drawing
C. draw D. drew
For the present, I can’t afford ________ a car.
A. to buy B. buy C. buying D. for buying
This road is about .
A. twenty metres tall B. twenty metres thick
C. twenty metres long D. twenty metres wide
Mary lost her bag school.
A. on her way to B. on her way
C. in her way to D. in her way
. is necessary that you start training a few months before the walk.
A. This B. That C. What D. It
