He was a bit nervous. He _________his spare breath with a soft sound that was almost heard by the audience.
| A．gave out | B．let out | C．picked out | D．blew out. |
. These old buildings possibly __________ the Ming Dynasty.
| A．dated back to | B．date back to | C．date back | D．are dated back to |
The government announced that six highways by the end of last year.
| A．built | B．had built | C．have been built | D．had been built |
With his eyes _______ on me, he came towards me.
| A．fixed | B．fixing | C．to fix | D．were fixed |
Humans are destroying nature day by day, _____of course, will cause punishment sooner or later.
| A．who | B．which | C．it | D．that |
The little girl was jumping __________ in the kindergarten, waiting for her mother.
| A．upside down | B．back and forth | C．back to forth | D．up and down |