Many young people took part in _______ trees on Tree Planting Day.
A．planting B．plants
C．to plant D．plant
The little boy pretended _______ when his mother came in.
A．sleeping B．asleep
C．to asleep D．to be asleep
—Why are you so excited today?
—We were told ____ a picnic this weekend.
A．have B．to have
C．having D．had
I found a letter ______ on the floor when I came into the classroom.
A．lying B．lay
C．lie D．lies
The children decide _____ their school yard this Friday afternoon.
A．clean B．to clean
C．cleaning D．cleaned
The boy is often heard _____in the music room. He sings very well.
A．practice singing B．to practice singing C．practiced singing
