He didn’t know __________
A．what kind of snake it is B．what kind of snake is it
C．what kind of snake it was D. what kind of snake was it
Let’s stop _______ a rest. I am so tired.
A．having B．to have C．having D. had
We must do everything what we can _______ water and paper.
A．save B．saving C．to save D. saved
My sister got a beautiful present on her ________ birthday.
A．fiveth B．five C．the fifth D．fifth
It's a good idea ______ breakfast every day.
A．had B．have C．has D．to have
Look at the new words. Please ______ in your notebook.
A．write it down B．write down it
C．write them down D．write down them
