| (a) | - | A, the lessor, gives B, the lessee, notice to quit the property leased. The notice expires. B tenders and A accepts, rent which has become due in respect of the property since the expiration of the notice. The notice is waived. |
| (b) | - | A, the lessor, gives B, the lessee notice to quit the property leased. The notice expires, and B remains in possession. A gives to B as lessee a second notice to quit. The first notice is waived. |