题文
It’s hard-working ____ him to spend three hours ____ the library on Sunday.
| A．for; in | B．for; on | C．of; in | D．of; on |
It’s hard-working ____ him to spend three hours ____ the library on Sunday.
| A．for; in | B．for; on | C．of; in | D．of; on |
试题篮
()
粤公网安备 44130202000953号
