These plants are watered ＿＿ .
| A．every a few days | B．every third day |
| C．every others day | D．each two days |
.____on his novel, the author decided to adapt it into a play.
| A．Basing | B．Based | C．To base | D．Being based |
______the workshops, the executives had a talk with the workers.
| A．Inspected | B．Inspecting | C．Having inspected | D．Having been inspected |
.一Will somebody go and get Dr．Smith？
一He’s already been．
| A．asked for | B．sent for | C．looked for | D．called for |
The English spoken in the United States is only slightly different from ___ spoken in England.
| A．which | B．what | C．that | D．the one |
—They are quiet, aren’t they?
—Yes. They are accustomed ______ at meals.
| A．to talk | B．to not talk | C．to talking | D．to not talking |