We can’t work out the physics problem. Can you tell us ________?
| A．how to do | B．what to do it |
| C．how to do it | D．what should to do |
The smile to the teacher’s face showed she was_____with us.
| A．strict | B．angry | C．pleased | D．sorry |
When the player finished running, he was out of _____.
| A．breathe | B．breathing | C．breath | D．the breath |
_____ energy, shut off the hot water after you take a shower.
| A．Save | B．Saving | C．To save | D．Saved |
—Haven’t I told you that you should be home earlier?
—Yes, but I _____home earlier than I usually do.
| A．was coming | B．will come | C．came | D．had come |
Students who read a lot can do much better in learning English than_____who don’t .
| A．this | B．that | C．these | D．those |