She has a teenage granddaughter about my age is really kind．（ ）
A．whoB．whichC．whereD．/
Do you believe that humans could live on Mars？
I don't think _____________________．（ ）
A．if it comes true
B．that it will come true
C．why it will come true
D．how does it come true
My computer has caught a virus and it has gone wrong．
______________________（ ）
A．I'm sorry to hear that．
B．Don't mention it．
C．It doesn't matter．
D．I'm sure it can work．
Oh! What's wrong with your finger？
I hurt it while I ___________ a model plane．（ ）
A．. madeB．was makingC．am makingD．make
Which of the following words can NOT be added the prefix "un_______" to give it the opposite meaning？（ ）
A．happyB．healthyC．usualD．polite
A black young man named Sheku Kanneh﹣Mason is _________ enough to show that people of colour can take on any challenge of classical music．（ ）
A．modestB．humorousC．confidentD．curious