—Did you listen to the report last Friday?
—Yes, it was about the shortage of immigrant workers. That was the first time I ________ about the subject.
| A．have heard | B．was hearing |
| C．would hear | D．had heard |
What I'm considering now _________ the money we need.
| A．is | B．are | C．were | D．was |
The fact _______ she had not said anything surprised all of us.
| A．which | B．what | C．that | D．how |
We thought _______ strange that Tom did not come yesterday.
| A．that | B．it | C．this | D．what |
That is ______ Lu Xun once lived.
| A．what | B．where | C．that | D．why |
That is _______ he likes the place so much.
| A．that | B．what | C．why | D．how |