Select two sentences that contain no errors in spelling. The elementary school decided to hold a ceremony to comemorate its fiftieth anniversary.
Though the team members were happy with the victory, they knew they would face retaliation in the rematch.
Rodney's mom is letting him attend the concert, but she stipulated that he first finish all his homework and help with the yard work.
Will was exultent that Molly decided to follow through with their plans for dinner; he had made reservations a week ago and was looking
forward to trying a new restaurant.
Marissa and Kyle were in quandery as to who would give their mom the birthday flowers; Marissa thought Kyle should because he was the
one who bought them, but Kyle felt Marissa should because the flowers were her idea.

Though the team members were happy with the victory, they knew they would face retaliation in the rematch.

Rodney's mom is letting him attend the concert, but she stipulated that he first finish all his homework and help with the yard work.

Explanation:

the first sentence, "commemorate"

4th- "exultant"

5th' "quandary"

21 balloons is the story of professor william sherman's travels.

in 1883, he set off from san francisco for a balloon ride over the pacific and was found a month later floating with 21 balloons in the atlantic ocean. this seemed an astounding feat and everyone wanted to know what had happened.    

professor sherman was loyal, however, and said he would tell his tale first to the western american explorers club in san francisco, of which he was a member. this built up suspense for several chapters before he began to tell of the wonders of his adventures and the amazing island of krakatoa, an island which had just been blown up by a volcano.  

the residents of krakatoa are all millionaires who live under a "gourmet government" of their own devising. we get to see all the incredible adventures that creative people with unlimited resources would create according to the author.