问题

Though suffering constant noise from the outside world, little Tommy was still working with all his attention _____ on his unfinished warship model.

A:focusing
B:concentrating
C:fixed
D:looking

正确答案是：

同类题型

What’s this in English—-_____________.

_______ the support of my teacher, I worked out the problem in the end.

There are about 2，000 people on the beach______. So it’s really crowded now.

Did ______ on time make the teacher angry

下列各句中，没有语病的一句是