一When did you buy this still life picture?
一It was in 1999 I traveled in Paris．
| A．since | B．that | C．when | D．before |
—How did she get infected?
—She _______ the viruses without any protection．
| A．exposed to | B．had exposed to |
| C．was exposed to | D．been exposed to |
The teacher told Tom to sit ______ in class.
| A．hard | B．hardly | C．straight | D．straightly |
________ at the party, I found Tina seated alone in the front row.
| A．Arriving | B．To arrive | C．Arrive | D．Arrived |
There was no lack_______ volunteers, but money．
| A．at | B．of | C．in | D．about |
She _______ the path as the trees around her became thicker．
| A．lost sight of | B．caught sight of |
| C．lost sight | D．caught sight |