I’m happy ______ should be done has already been done.
| A．with what | B．that that |
| C．by that | D．that what |
_____ 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 |
_____ many times, but 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 |
Scientists think that the continents _______ always where they ___today.
| A．aren’t; are | B．aren’t; were | C．weren’t; are | D．weren’t; were |
--- Would you tell me ______ you want your tea with sugar or milk?
--- Sugar, please.
| A．whether | B．where | C．what | D．how |