Question 4: He was _______ when I had those problems and said whatever I did he would stand by me.
Based on the thought of the following part of the sentence to guess the meaning of the word to be filled in: He is the person who … when I have those problems and say anything, he is always on my side.
Supportive: support, encourage
Exciting: interesting
Busy: busy
Dull: stupid
So the correct answer is A.
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