Tom is really a naughty boy. He likes to ______ and play jokes on his younger sister when their parents are not around. (A) alert (B) spare (C) tease (D) oppose
Elderly shoppers in this store are advised to take the elevator rather than the ______， which may move too fast for them to keep their balance. (A) airway (B) operator (C) escalator (D) instrument
Upon hearing its master’s call， the dog wagged its tail， and followed her out of the room ______. (A) obediently (B) apparently (C) logically (D) thoroughly
Since many of our house plants are from humid jungle environments， they need ______ air to keep them green and healthy. (A) moist (B) stale (C) crisp (D) fertile
The skydiver managed to land safely after jumping out of the aircraft， even though her ______ failed to open in midair. (A) glimpse (B) latitude (C) segment (D) parachute
The invention of the steam engine， which was used to power heavy machines， brought about a ______ change in society. (A) persuasive (B) harmonious (C) conventional (D) revolutionary
To encourage classroom ______， the teacher divided the class into groups and asked them to solve a problem together with their partners. (A) operation (B) interaction (C) adjustment (D) explanation
Hundreds of residents received free testing ______ from the city government to find out if their water contained any harmful chemicals. (A) kits (B) trials (C) zones (D) proofs
The 2011 Nobel Peace Prize was awarded ______ to three women for the efforts they made in fighting for women’s rights. (A) actively (B) earnestly (C) jointly (D) naturally
