There will be less pollution ________ more people choose public transportation.
A.until B.though C.before D.if
Bob was talking with his uncle ________ his sister was dancing at the party.
A.though B.after C.until D.while
________ I know little about English, I can't understand this English text completely.
A.Although B.Since C.While D.Until
________ Tom isn't rich enough, he still spends much money on books.
A.Unless B.After C.Although D.Because
“Look before you leap.” is an English saying. It tells us to think carefully ________ we act.
A.after B.as C.before D.when
The two companies decided to work together, ________ they had common interest.
A.because B.though C.while D.until
