His mother watched him ____ his meal.

题目

His mother watched him ____ his meal.
A.to eat B.eat C.eats D.ate
How much did you spend ____ this coat?
A.for B.in C.on D.at
"It doesn't bother me not to watch TV."means"It's___ to watch TV.
A.waste time B.important for me C.no use D.not important for me

答案

B watch sb do sth
C on spend on sth/（in）doing sth
D 语义辨析