[mr_moh55555]

1- We ……….. our old friends for a year. They are too busy. ( 2004 2nd )
a) hadn't met b) didn't meet c) haven't met d) haven't been met
12- Scientists are still ……….. to find out what happens when we sleep.
( 2005 2nd )
a) try b) trying c) have been trying d) tried
13- Scientists ……….. to find more sources of renewable energy. ( 2005 1st )
a) is wanted b) am wanted c) has wanted d) want
14- It ……….. for the past three hours. ( 2006 1st )
a) has rained b) had rained c) was raining d) has been raining
15- They ……….. what to do for the holidays yet. ( 2007 2nd )
a) hadn't decided b) haven't decided c)
don't decide d) won't decide

الجملة 14 حصل عليها جدل اثناء التصحيح و في النهاية تم الاتفاق علي الحل الملون