a Jolly is my friend, she (a) sing in a choir, but she gave it up for some unavoidable reasons. b The world economy is passing through a great crisis due to war situation. The world leaders (b) concentrate on the economy and security of the common people. c We went to John's office yesterday. He was heavy busy. He behaved (c) he had not seen us. d(d) a dinosaur (d_1)? Have you ever seen it? e(e) you finish your dinner, don't delay to join us. f He is so honest that he (f) starve than take a bribe. g The ice had cracked. (g) you had disappeared into the icy water? h You told me about a new novel. (h) the novel (h_1)? i I am very thirsty. I (i) having a nice cool glass of lemonade. j(j) exists no life in the Mars.