—You’ve dropped_______ “s” in the word “acros”.
—Oh, ______letter “s” should be doubled like this “across”.
A．a ; a B．an ; a C．an ; the D．the ; the
—Thank you for your MP4 player. I’ll ask Mary to take it to you soon.
—______. I’ve bought a new one.
A．No sense B．No hurry C．No way D．No use
I know one of the things I was unsure about was _____ hard it would be to climb this mountain.
A．what B．that C．however D．how
Some researchers are finding that daydreaming may be important to ______ mental health and it is ______ good means of relaxation.
A．the; 不填 B．不填 ; the C．不填; a D．不填; 不填
“Xi Jinping’s report, ” a smile on his face, he continued, “_____ to several hot topics, discusses how to increase farmers’ income.”
A．referring B．refers C．having referred D．referred
As I was sitting down for dinner,the telephone ________ring.
A．should B．must C．could D．would
