Which sentence uses the bold vocabulary word correctly? a) i find that having a prior to go along with a difficult concept makes it easier to understand. b) the story of a young boy’s journey from one country to another illustrated that anything is possible for a determined mind. c) the results for the weight-loss study will vary which means that everyone should lose the same number of pounds in the end. d) the doctor was sure to margin his patient’s records before filing them away each night.

1- cleans/ tidies up

2- were

3-would be

4- had known

5-takes

6-must be/ have to be/should be

martians or other types of aliens represent a unique fear as opposed to zombies. vampires and other types of monsters.   in most sci-fi stories, aliens come from other worlds and have different or more advanced technology.   abductions and experimentation on human bodies that involve these technologies, or the use of these technologies against human beings and the use of unknown "powers", are a type of fear that's different from that of other types of monsters.