He often spends much time________playing the piano. 
#49131
A
practice
B
practices
C
to practice
D
practicing
推荐题目
Kate is good at      .
#50209
A
cook and washing
B
cooking and to wash
C
cooking and washing
D
to cook and to wash
Mary used to _____short hair.
#49101
A
be
B
have
C
had
D
has
Let’s _______ them _______ our home town.
#49742
A
show, visit
B
show, around
C
to show, to visit
D
to show; around