The old woman had a letter from her son in the army ___ to her.
| A．read | B．write | C．written | D．received |
The joke told by Tom made us ____, so our maths teacher couldn't make himself______.
| A．laugh; hearing | B．laugh;heard | C．laughing; hear | D．laughed; to be heard |
.- Jenny looks hot and dry.
- So ___ you if you had a high fever.
| A．will | B．do | C．are | D．would |
___ many times, she still didn't know how to do it.
| A．She was taught | B．Having taught | C．Having been taught | D．She has taught |
Scientists think that the continents today____ always where they _______.
| A．aren't; are | B．aren't; were | C．weren't; are | D．weren't; were |