“Where have you been?” — “I got caught in traffic; otherwise _____ sooner.”

My father ________ lots of stamps since he was at primary school.

The glass doors have taken the place of the wooden ones at the entrance, ___ in the natural light during the day.[ ]

下列各句没有语病的一项是

ys teachers feel they can’t help everystudent ________ suitable reading materials, so they encourage them __________English on the Internet