The Tower of London _____ by William the Conqueror. a. was

The Tower of London _____ by William the Conqueror.
a. was built b. is built c. has been built d. built

_ sky is blue in summer and grey in winter.
a. the b. an c. - d. a

He ___ the test from 2 till 3.
a. was writing b. is writing c. writed d.wrote

What subjects ___ you good at?
a. did b. does c. do d. are


He ___ he will pass his exams soon.
a. hope b. hoped c. is hoping d. hopes