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—This is the first time I __________ my first picture with my own hands.
—It's time that you __________ a picture for me.
| A．took; will take | B．have taken; took |
| C．took; took | D．will take; have taken |
After Jack had sent some e-mails, he _______ working on his project.
| A．had started | B．has started | C．started | D．starts |
In order to find the missing child, villagers _______ all they can over the past five hours.
| A．did | B．do | C．had done | D．have been doing |
—Tommy is planning to buy a car.
— I know. By next month, he ____ enough for a used one.
| A．saves | B．saved | C．will save | D．will have saved |
Had it been possible, I would have gone to attend Monica in the hospital, but I________ fully occupied last month.
| A．had been | B．was | C．am | D．have been |
Listening to loud music at rock concerts caused hearing loss in some teenagers.
| A．is | B．are | C．has | D．have |