A. vertically B. How about C. older D. sour A. kangaroo B. in theory C. surprised D. every A. day B. take the lead C. in terms of D. sign A. vein B. go to C. hundred D. ssh A. pounce B. come on C. officer D. wonderful A. profound B. good luck C. no mobile phone D. prehistoric A. painful B. thunder C. month D. migration A. such that B. immigrant C. metre D. straightforward A. walk the dog B. subject C. a number of D. koala A. author B. win C. send D. of one's own