His sister _______ from home for a long time.
| A．has left | B．has been away | C．left | D．will leave |
To improve his riding skills, he spends _______ an hour a day practicing riding.
| A．at last | B．at least | C．at once | D．at all |
Jim said he _______ dinner. He was quite full.
| A．had had | B．was having | C．had | D．had eaten |
Is _______ hard for you to finish the work on time?
| A．that | B．it | C．what | D．which |
If she _______ tomorrow, I’ll call you.
| A．come | B．comes | C．will come | D．came |