43 .I usually read newspapers while I(wait)...................for the bus. 44 .The sky is very dark.I think it (rain).................... 45 .I(not invite).......................Recharch yet. 46 .Before I (go).............to live in spain,I (think)..............it was the hot country. 47 .We should go home.It(get)..................darker and darker. 48.”I (try)..............to get hold of you for ten minutes.Where have you been?” 49.My brother usually (go).................to work early to avoid traffic jams. 50.I(not eat) ..............................anything for 2 days.