— Can we visit Hong Kong this summer holiday?
— I wonder _______ it is the best time to go there.
| A．if | B．when |
| C．weather | D．how |
The accident happened _____the old man _____ a cold morning .
| A．to ; to | B．in ; in | C．in ; to | D．to ; on |
This is Mr. Green’s ________visit to America. He has never been there before.
| A．first | B．second | C．third | D．fifth |
---Are the Smiths living in the house alone ?
--- Yes, although they have three sons, _____ of them live with their parents.
| A．neither | B．both | C．all | D．none |
Kate has a beautiful _______ . Listen ! She is singing very well.
| A．voice | B．sound | C．noise | D．smell |
After school, they usually play _____ football for an hour on _____ playground.
| A．the ; the | B．/ ; / | C．/ ; the | D．the ; / |