—Did you catch what I said?
—Sorry. I ______ a text message just now.
| A．had answering | B．have answered | C．would answer | D．was answering |
--- How did your students express their thanks to you on Teachers’ Day?
--- A gift, together with many flowers ______ sent to me by my students.
| A．is | B．are | C．was | D．were |
--- Why do you look sad?
---There are so many problems ______.
| A．remaining to settle |
| B．remained settling |
| C．remaining to be settled |
| D．remained to be settled |
--- What has happened here?
--- There was ______ accident here about an hour ago. ______ car hit a tree and ______ driver was killed.
| A．an; A; the | B．the; A；the | C．an; The; a | D．the; The; a |
We can’t get the machine to run. There must be ______ with it.
| A．something wrong serious |
| B．something seriously wrong |
| C．something serious wrong |
| D．something wrong seriously |
Only ______according to the directions can the medicine be quite effective.
| A．taking | B．taken | C．being taken | D．having been taken |