____ he was very tired, he didn't stop to have a rest.
| A．But | B．As | C．Because | D．Although |
—Can I help you，dear?
—Yeah，I don’t know a banana milk shake. Maybe you can teach me.
| A．what to do |
| B．when to make |
| C．how to make |
| D．why to do |
_____ to improve English?
| A．Do you think what we should do |
| B．What do you think should we |
| C．Do you think that should we do |
| D．What do you think we should |
—Which sweater do you prefer, the yellow one or the pink one?
—______. I like a light blue one.
| A．Either | B．Both | C．Any | D．Neither |
I don’t know if he_________here. If he ___________tomorrow, I will tell you.
| A．comes; comes |
| B．will come; comes |
| C．comes; will come |
| D．will come; will come |
The world’s population is getting larger and larger, so scientists are trying to ______ new ways to solve the food shortage.
| A．keep up with | B．come up with |
| C．make up with | D．catch up with |