He decided to buy the painting______first sight.
選A at
因為at first sight 是第一眼的意思,固定搭配
in one's sight在某人看來
I seem ____someone koncking at the door
選to hear
seem 的用法：
it seems that 就是it 做主語,后面跟從句
sb seems to do 就是人做主語,后面跟不定式
副詞修飾動詞位置可前可后,無所謂
比如
read loudly (后）
the noise is slowly driving me mad（前）
He missed the bus by three minutes
就是他晚了三分鐘,沒趕上那趟公交車
這里的by 意思就是截止到三分鐘為止,相當于大約,模糊一點,理解為for 3 minutes 也行,不去看也行