Xu Beihong is forhis horse paintings.

It was reported that a tall man with a black mask broke into the house and stole $5000_______.[ ]

The researchon the new flu virus vaccine is challenging and demanding Who do you think cando the job —______ mystudents have a try

(2013·高考江苏卷)I should not have laughed if I________ you were serious

Bob, where are you working now? — I used to work in a small company, but I ________ a job in some bigger companies