The book fair has received a positive ________ from readers.
A、resultB
A结果，效果B反应，回答C解决，协议D解决，解答
Charles Smith, ______ was my former teacher, retired last year.
At any rate I did not succeed _______ myself understood by you.
It _______ me three years to draw the beautiful horses.
Hewouldhavegivenyoumorehelp,ifhe________sobusy.
Itrainedhardyesterday,______preventedmefromgoingtothepark.
