The teacher speaks very loudly ______ all the students can hear her.( )
so that
because
since
when
Jack may fall behind the other students in his class when he _________ back from England next week.
Lily ________ other colours ________ blue, green and yellow.
He will send me a message as soon as he _________ in London.
Nobody ______her because she has a new look.
I don’t know if Mr. Smith ____. If he ___, I will tell you.