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

do you have English —-We have it on Monday and Friday.

Please remember to _____ a stamp _____ your envelopebefore you post it to your friend

John promised his doctor he ________ not smoke, and he has never smoked ever since. [ ]

The number of the teachers who ______ cars in our school ____ increasing very fast.