achieve (v) brain (n) clever (adj) concentrate (v) guess (v, n) hesitate (v) instruction (n) make progress (v phr) make sure (v phr) report (n) revise (v) search (v, n) skill (n) smart (adj) consider (v) course (n) degree (n) experience (v, n) expert (n, adj) ail (v) mark (v, n) subjec ...