Helen is working _the physics problem._上为什么是填on,而不是at/out/ov
Helen is working _the physics problem._上为什么是填on,而不是at/out/ov
Where's Mike?He is working _____ physics A in;problem B out;
He had no difficulty working out the problem为什么是working
Being a stay-at-home mom and working is(这里为什么是is而不是are,因为主语有
the physics problem remained cofusing to the boy although ov
we should 空the problem tonight.为什么用work out 而不是work at?
Lily is working ___ the maths problem.A.at B.in C.on D.of
Mike _(call) his friend on the phone now.为什么是(calling)而不是(is
There ___ some food on the desk.为什么横线上填is而不是are?
For me,working out that problem is difficult.同义句
That is the new ( ) of working out the problem.
the teather is(working on) his English project.为什么要填working