The Math problem is too difficult , we really don’t know ________ to do it .
| A．which | B．where | C．what | D．how |
My best friend Jack looks happy, and he always ________ a smile ________ his face.
| A．wear; on | B．put; in |
| C．wears; on | D．wears; in |
She is ready to help people ________.
| A．any time | B．any times |
| C．some time | D．sometime |
The _________ joke often makes the children.
| A．fun, laugh | B．funny, to laugh |
| C．fun, laugh | D．funny, laugh |
— _____________ does your cat weigh?
— About 5 kilograms.
| A．What | B．How much |
| C．How many | D．How |
He is _________ of the three.
| A．taller | B．the taller boy |
| C．the tallest boy | D．the tall boy |