The big fire in Shanghai, believed to ________ due to the burning of construction materials, caused 58 deaths and destroyed all the belongings of the people there.

Not knowing where to go or what to do, I ______ across the streets aimlessly .

How long ________ in that company before you workwith us–For eight 8 years

To appreciate that it’s not easy for you, but you ______ try to get here on time．

per studies some _______cases in which something somehow wrong leads to the miscommunication, so thatEnglish teachers may improve their teaching.