---I haven’t seen my grandparents for long. I’m too busy ___ them these days.
---Why not call them instead?
| A．visit | B．to visit | C．visiting | D．visits |
Next Friday we ____ our first field trip.
| A．are going to go | B．are going | C．go on | D．are going on |
Thank you for ____ me to the party.
| A．invite | B．invites | C．invited | D．inviting |
All the students ____last Sunday.
| A．enjoyed themselves | B．had good time | C．enjoy themselves | D．have a good time |
Did you ___ this afternoon?
| A．call at her | B．wake up | C．ring her up | D．ring up her |
Mum left her son ____ just now.
| A．at home | B．by himself | C．by herself | D．lonely |