1. it’s often less expensive to buy goods in _______ quantity, but you’d better examine _______ quality before buying them. a. /; the b. the; / c. a; the d. the; the 2. just after putting away the dishes, ________. a. the door bell was rung b. mother heard the doorbell ring c. someone knocked at the door d. the doorbell rang loud 3. ________ many cities around the world are overcrowded, some japanese are worried that more areas of their country will be uninhabited. the main reason is a _________ population. a. as; increasing b. though; pressing c. while; declining d. since; sliding 4. henry goes to a free class every sunday afternoon which ____ at 4 p.m. a. starts b. is start c. is to start d. started 5. ---i’ll be away on a business trip. would you mind looking after my cat? ---not at all. ______.
