Question

which of these are complete sentences? check all that apply
the date of the chinese new year is determined by a lunisolar calendar.
a lunisolar calendar shows the moon phase and the solar time of year
usually on the second new moon after the winter solstice
a public holiday in many countries with large chinese populations
it is traditional to light fireworks on the first day of the celebration
due to concerns about fire hazards, some regions have banned fireworks

Explanation:

A complete sentence must have a subject, a predicate (verb), and express a complete thought.

1. "The date of the Chinese New Year is determined by a lunisolar calendar": Has subject ("The date of the Chinese New Year"), predicate ("is determined"), and complete thought.
2. "A lunisolar calendar shows the moon phase and the solar time of year": Has subject ("A lunisolar calendar"), predicate ("shows"), and complete thought.
3. "Usually on the second new moon after the winter solstice": Lacks a predicate and does not express a complete thought.
4. "A public holiday in many countries with large Chinese populations": Lacks a predicate and does not express a complete thought.
5. "It is traditional to light fireworks on the first day of the celebration": Has subject ("it" as dummy subject), predicate ("is traditional"), and complete thought.
6. "Due to concerns about fire hazards, some regions have banned fireworks": Has subject ("some regions"), predicate ("have banned"), and complete thought.

Answer:

• The date of the Chinese New Year is determined by a lunisolar calendar.
• A lunisolar calendar shows the moon phase and the solar time of year
• It is traditional to light fireworks on the first day of the celebration
• Due to concerns about fire hazards, some regions have banned fireworks