Complex Sentences

Is this correct:
Although it was over 400m high, Philippe was not scared.

• Correct
• Incorrect

Tags

CCSS.L.9-10.1

CCSS.L.9-10.2

CCSS.W.9-10.4

Is this complex sentence correct:
Many people stopped to watch, even though he was only a tiny dot in the air.

• Correct
• Incorrect

Tags

CCSS.L.5.1E

CCSS.L.7.1B

CCSS.L.3.1H

CCSS.L.3.1I

CCSS.L.2.1F

Is this complex sentence correct:
If the police had known about this event they would have not allowed it to happen.

• Correct
• Incorrect

Tags

CCSS.L.5.1E

CCSS.L.7.1B

CCSS.L.3.1I

CCSS.L.3.1H

CCSS.L.2.1F

Where should the comma go:
Until it was sunrise Philippe waited on the roof.

• After 'was '
• Before 'waited'
• After 'until'
• After 'sunrise'

Tags

CCSS.L.9-10.1

CCSS.L.9-10.2

What are these words called:
If, Although, Whilst, Whenever, As

• Subordinating conjunctions
• relative pronouns
• clauses
• Adverbs

Is the punctuation correct?
Philippe felt: nervous; excited and determined.

• Correct
• Incorrect

Is this punctuation correct?
The Twin Towers in New York were: tall, imposing and high.

• Correct 
• Incorrect

Which is the main clause:
Philippe, a brave French performer, had dreams of walking between the towers.

• a brave French performer
• Philippe, a brave French performer
• Philippe had dreams of walking between the towers.
• had dreams of walking between the towers.

Tags

CCSS.L.9-10.1