The test seemed … simple that we thought we would all pass.

Analyze the question The sentence is: "The test seemed __ simple that we thought we would all pass." We need a word that fits grammatically and logically with the clause "that we thought we would all pass."

Explain the concept This is the so... that structure, which shows result or consequence:

• so + adjective + that + clause: "She was so tired that she slept immediately."

Compare the other options:

• very only intensifies an adjective and cannot be followed by a "that" result clause: "The test was very simple" is fine, but "very simple that we thought…" is wrong.
• too shows excess with a negative result, and it is followed by "to": "too difficult to solve."
• over is not used this way with an adjective in standard English.

Step-by-step solution

1. Look at the clause after the gap: "that we thought we would all pass." This is a result clause.
2. A result clause after an adjective (simple) needs so ... that.
3. Test option B: "The test seemed so simple that we thought we would all pass." This is grammatically correct and makes sense.
4. Check the others: • A: "over simple that" is incorrect. • C: "very simple that" is incorrect. • D: "too simple that" is incorrect, because too needs "to" and gives a negative sense.

Answer: B. so

Tip: When you see a gap followed by "that" and a result clause, think so ... that (or such a ... that with a noun). Remember: "too" goes with "to", and "so" goes with "that."