A mere YES or NO answer does not merit any point. cite applicable provision/s of the law.

1. D lost in gambling and a payment, executed a promissory note in favor of the winner C. C then assigned the note to A. May A successfully recover from D?
2. In a contract, the provisions of which were very similar to a lease contract, both parties agreed that the same should not be regarded as a lease. Is this stipulation valid?
3. Two persons entered into a contract of lease of land. It was stipulated that at any time before the tenant constructed any building thereon, he could cancel the lease. Is the stipulation valid?
4. A truck driver was not a party to the contract of carriage between the A and B. May he be held liable under the agreement?
5. A shipped his cargo in B's vessel. B and C's company entered into a contract for C's company to unload the cargo from the ship's hold. In the lifting operations, A's cargo was damaged. May A successfully sue C's company for damages?
6. A leased his property to B. B subleased part of the premises to C. B violated the conditions of the lease, so A wanted to rescind the lease contract. C objected because if the lease is cancelled, the sublease would naturally be affected. Will C's objection proper.?
7. A agreed to lend B his (A's) car on September 30. If on September 30, A refuses to deliver the car, may B sue him for damages?