1.you look terrific today ! That color really ....unsuitable for.....you !
2. the.. result....of the experiments proved to be very informative
3.-"well done !that's a very nice picture !"-"....thanks for your compliment...."
4."must t finish my homework now ?" -".......yes i must......"
5. the graduation is sad ,because the time we studied together has __come to an end _
6.claudia did't have an umbrella ,so she got wet=> if claudia had an umbrella, she wouldn't get wet
7. "i would study japanese if i were you,"my friend said=> my friends suggested me to study japanese
8.i don't really want to visit the art gallery=> i don't feel like going to the art gallery 
9.i wish i had a computer=> if only i had a computer
10. my brother is too young to ride to school=> my brother isn't old enough to ride to school
11.when did you last ride a bike => how long haven you not rode a bike