-- It shouldn’t take long to clear up after the party if we all volunteer to help.-- That’s true. _____.
A beam of light will not bend round corners unless______to do so with the help of a reflecting device .
Bad luck .Our maths teacher keeps us ______too much homework.
He ______to catch the last bus but she was too late .
----Doesn’t she work here ? ----________.
----Have you learned English before ? ----Yes,I _____English for 6 years in my hometown .