He had to pause from time to time to wipe the sweat from his forehead, because the air—conditioning system ______________.
. “Do you need any help with those heavy bags?” “No, thanks; _____.”
. “Mr Smith is a kind person. I like to to work with him.” “In fact, everyone _______.”
. “At lunch time I‘d like to have a chat with you.” “Pardon, Have _____ with me?”
. “I think you should phone Jenny and say sorry to her.” “______. It was her fault.”
四、it类. Everyone knows that _______ is dangerous to play with fire, but _______ is difficult is to prevent children from playing with fire.