The speed of 6G will exceed 125 GB/s，______ a new generation of virtual reality．（ ）
| A． |
allowing for |
B． |
accounting for |
| C． |
calling for |
D． |
compensating for |
I haven’t finished my report, but I promise I ______ it by the end of the week.
| A．will finish | B．have finished |
| C．will be finishing | D．will have finished |
It's a custom in China to have some tea or other drinks before the meal ________.
| A．serves | B．served |
| C．was served | D．is served |
—What’s all that noise about outside?
—Oh, I forgot to tell you. The road to the railway station ______.
| A．will be widened | B．is to be widened |
| C．has been widened | D．is being widened |
Since the time humankind started gardening, we _____to make our environment more beautiful.
| A．try | B．have been trying |
| C．are trying | D．will try |
We won’t start the work until all the preparations __________.
| A．are being made | B．will be made |
| C．have been made | D．had been made |