China is over 5，000 years old． It has a much__________ history than the USA．（ ）
A．longB．longerC．longest
The police are watching the suspect _____ for more clues which will help solve the case．（ ）
A．clearlyB．highlyC．closelyD．heavily
Facial recognition （人脸识别） technology is widely used for payment． _____， we needn't enter the passwords any more．（ ）
A．For exampleB．As a result
C．What's worseD．What's more
My feelings for you have not changed．
But you have changed． You are not as you _____．（ ）
A．areB．wereC．will beD．have been
I'm not sure what to write about The Secret Garden in the report．
You should read some _____ about the book before writing．（ ）
A．reviewsB．reasonsC．resultsD．rewards
The 2021 International Horticultural Expo _____ in Yangzhou．（ ）
A．holdsB．will hold
C．is heldD．will be held