(2013浙江台州)—Sam，let’s go and play basketball．
—Not now．I ________ Dick with his English．
A．help
B．helped
C．am helping
D．have helped
—What are you doing？
—I’m ________ the book Snow White．It’s really interesting．
A．seeing
B．looking
C．reading
D．watching
Excuse me，sorry to trouble you．Can you please take a photo ________ us？
A．in
B．for
C．of
D．with
A group of people ________ playing basketball there．
A．am
B．is
C．are
D．be
Some of the water in the rivers ________ not clean．
A．am
B．is
C．are
D．be
She is enjoying herself there．(同义句转换)
She is ________ ________ ________ ________ there．
