The firemen in Tianjin explosion scene devoted their lives ____ the spread of pollution.
| A．to preventing | B．to prevent |
| C．for stopping | D．to stop |
-Hello, _______ I speak to Lily?
-Hold on, please.
| A．may | B．must | C．need | D．should |
Tina _______ outgoing. She has many friends in her class.
| A．are | B．is | C．were | D．was |
I think Wechat makes us ______ closer.
| A．feel | B．felt | C．feeling | D．to feel |
There is ______ wrong with my watch. Can you tell me the time?
| A．everything | B．something | C．anything | D．nothing |
-Shall we meet ______ the school gate tomorrow afternoon?
-No problem!
| A．from | B．over | C．on | D．at |