I'm afraid you've mistaken me ______ my twin sister.
In the near future more advances in the robot technology ______ by scientists. A are making B in made C will make D will be make
Jack wasn't saying anything but the teacher smiled at him ____ he had done something very clever. A as if B in case C while D though
Only after they had discussed the matter for several hoursa decision.
they reached
did they reach
they reach
do they reach
Before a problem can be solved, it must be obvious ______ the problem itself is. A. what B that C which D why
It is the most instructive lecture that ________since I came to this school. A attended B had attended C am attending D have attended