当你和同学们漫步绿树成荫、遍地青草的林间小路上,你会感觉到空气特别地清新和湿润,此时你会想到这是绿色植物的什么作用改善了空气的质量? ( )
We usually go swimming in_____summer. But in____summer of 2018, we didn't.( )
/;/
a; a
/;the
a;/
Wasn't Bob supposed to be here?
_______. He will be here in five minutes.( )
No wonder
All right
Don't worry
Enjoy yourself
It was the middle of the night _____the sound of the piano woke me up.( )
because
if
when
although
Why did you leave that position?
I ______a better position in another factory.( )
offer
offered
am offered
was offered
Give me your email address, _______I'll send you the form.( )
or
and
but
nor