. In aerospace devices the weight of the necessary power producing equipment is _____.
| A．vital | B．possible | C．capable | D．reliable |
—John is said to have _____ missing since last week. Has he gone somewhere?
— Not really. He_______ his newly-bought apartment.
| A．gone, has decorated | B．been, was decorating |
| C．done, decorated | D．been, has been decorating |
— It’s a long time ______I saw you last.
— And what is a pity now that it will be a long time______ we see each other again.
| A．before; since | B．since; when |
| C．when; before | D．since; before |
In order to attract more online shoppers on Double-Eleven Day, the owners of Taobao promised that they would have those ordered goods _____ to their homes in less than 3 days.
| A．to send | B．sending | C．sent | D．send |
What I will talk about may annoy some of you, for which I offer apologies ______.
| A．in advance | B．in return |
| C．in control | D．in surprise |
Our maths teacher seems unable to explain everything in a way ______ makes sense to me.
| A．in which | B．of which | C．/ | D．that |