Instructions for homework have to be ______ so that every student knows clearly what is to do after class.
| A．specific | B．generous | C．general | D．detail |
The reason was _____ I was busy with my work at that time.
| A．why | B．because of | C．that | D．what |
The problem is _____ will go.
| A．that | B．when | C．who | D．whoever |
He misunderstood _____ I said.
| A．that | B．when | C．where | D．what |
Is this _____ ?
| A．you are looking for | B．that you are looking for |
| C．what are you looking for | D．what you are looking for |
The trouble is _____ we are short of hands.
| A．what | B．that | C．how | D．why |