Don't play with the knife，or you'll cut ________.（ ）
A．itselfB．yourselfC．himself
Mary shut the window just now ______ she could keep the insects out.
A．so thatB．whenC．tillD．after
This year's Beijing Music Awards will be covered ______ on Sunshine TV this Saturday.
A．livelyB．aliveC．livingD．live
—Mum，where is David？
—He ______ to see the science fiction film Back to the future.
A．is goingB．goesC．has goneD．was going
The Communist Party of China will have its 100th birthday ______ July 1，2021.
A．inB．onC．forD．at
Kitty sometimes eats ______ orange or some grapes after lunch.
A．anB．aC．theD．/