Varieties of household goods are sold here, ____from babies’ toys to old men’s walking sticks.
| A．changing | B．exchanging | C．ranging | D．classifying |
His father disappeared, ________ two children and never _______ from again.
| A．left; being heard | B．leaving; heard | C．left; be heard | D．leaving; to be heard |
In order not to be disturbed, I spend three days _______ in my study.
| A．locking | B．locked | C．to lock | D．lock |
He tried to ________ in Japanese.
| A．understand himself | B．make himself understanding |
| C．make himself understood | D．make to understand |
He is said abroad now, but I don’t know in which country he is
| A．to study | B．to be studying |
| C．to have studied | D．studying |
A saying goes practice makes perfect.
| A．which | B．that | C．whether | D．what |