Though its economy is speeding fast, China’s average family income is far below ________ of the developed countries.

The manager, __ it clear to us that hedidn’t agree with us, left the meeting room.

There are ______ people ,so it’s very crowded .

Will you go to the party tomorrow， Xiao Hai？ —No, ____ I was invited to.

y, developing teenagers’ critical thinking should be a ______ for education committed to helping students become competent citizens.