The new safety problem of contaminated（受污染的）milk is much more widespread， at least 22 dairy companies and their milk products that have appeared nationwide.
| A．to involve | B．involved | C．involving | D．being involved |
I had meant to meet you at the airport this morning but I was too busy for I ________ a report.
| A．wrote | B．was writing |
| C．have written | D．had written |
All the preparations for the task ________， and we're ready to start.
| A．completed | B．have completed |
| C．will be completed | D．have been completed |
—Do you know our school at all?
—No, this is the first time I ________ here.
| A．was | B．have been |
| C．came | D．am coming |
—Can I come after dinner?
—Yes, that's fine. I ________ anything.
| A．don't do | B．won't do |
| C．won't be doing | D．am not doing |
J. K. Rowling ________ writing Harry Potter at a local caf because she could not afford to heat her home.
| A．started | B．starts |
| C．has started | D．had started |