—Do you think playing cards is beneficial to our study?—No,if ________,it can help us kill time when we have nothing to do.
It is strongly suggested that measures________students to cheat in the exams.
________you were coming,I would have stayed at home.
________ so delicious,the food was sold out soon.
—You look a bit worried.What has happened? —So I do.You see,the computer I got ________ yesterday doesn’t work again.
This street is very crowded at this time of day.You have to be very cautious while ______.