Which part of the following declarative sentence is incorrect? "That horses refuses to be saddled."

"She did not take his concern that seriously." What part of speech is "that"?

The 'comma splice' is a kind of:

Identify the dependent clause: "Should we clean up together, are you going to do it yourself, or do you expect me to do it for you?

"We looked in the mailbox, the garden, the shed, and behind a tree." What type of error is present in this sentence?

Which part of this sentence is incorrect: "Only one of the seven countries that participate have any objections."

"While we were gone, Jason cleaned the house." Which best describes this example?

Correct the following sentence: "First thing in the morning, Joe likes to make coffee, to exercise, and then taking a shower."

"The woman smiled sadly." What part of speech is "sadly"?

Which of the following is an example of a dependent clause?

"Be more careful." Based on its purpose, what type of sentence is this?