Lingling switches on the laptop________ opens a new document. She wants _______ write her homework.
| A．and；to | B．to；and | C．for；to | D．and；or |
Why not let ________ help you?
| A．my friend and I | B．my friend and me |
| C．I and my friend | D．my friend and I to |
________ Sunday morning, Peter goes to visit the museum _________ a big garden in front.
| A．On; with | B．On; has |
| C．In; has | D．In; with |
Swimming is _______ fun in _______ summer.
| A．a; 不填 | B．不填; a |
| C．不填; the | D．不填; 不填 |
--- does the baby mouse weigh? ---About 20 grams.
| A．How heavy | B．What |
| C．How many | D．How much |
Do it now. __________, it will be too late.
| A．While | B．Otherwise | C．Yet | D．So |