It's a good habit to wash your hands ________ you have meals.( )
A.unlessB.whileC.whenD.before
We talked about the problem and Tim ____ doing some research first.( )
finished
enjoyed
suggested
practiced
________ Simon has done well in his studies,he still works really hard.( )
Although
Because
Unless
When
The train travelled________ fast for us to see much outside the window.( )
quite
very
too
so
I think it is true that Jill ______ to work today because she is on a trip.( )
has come
didn't come
is coming
will not come
Many people find that listening to some good music helps ______ when they are low.( )
us
you
them
it